source stringclasses 1
value | repo stringlengths 5 63 | repo_url stringlengths 24 82 | path stringlengths 5 167 | language stringclasses 1
value | license stringclasses 5
values | stars int64 10 51.4k | ref stringclasses 23
values | size_bytes int64 200 258k | text stringlengths 137 258k |
|---|---|---|---|---|---|---|---|---|---|
github | rubocop/rubocop | https://github.com/rubocop/rubocop | lib/rubocop/cop/style/redundant_parentheses.rb | Ruby | mit | 12,856 | master | 12,705 | # frozen_string_literal: true
module RuboCop
module Cop
module Style
# Checks for redundant parentheses.
#
# @example
#
# # bad
# (x) if ((y.z).nil?)
#
# # good
# x if y.z.nil?
#
class RedundantParentheses < Base # rubocop:disable Metrics/... |
github | rubocop/rubocop | https://github.com/rubocop/rubocop | lib/rubocop/cop/style/array_join.rb | Ruby | mit | 12,856 | master | 1,167 | # frozen_string_literal: true
module RuboCop
module Cop
module Style
# Checks for uses of `*` as a substitute for `Array#join`.
# Using `join` is clearer about intent and more readable than
# overloading the `*` operator for string conversion.
#
# Not all cases can be reliably check... |
github | rubocop/rubocop | https://github.com/rubocop/rubocop | lib/rubocop/cop/style/require_order.rb | Ruby | mit | 12,856 | master | 3,781 | # frozen_string_literal: true
module RuboCop
module Cop
module Style
# Sort `require` and `require_relative` in alphabetical order.
#
# @safety
# This cop's autocorrection is unsafe because it will obviously change the execution order.
#
# @example
# # bad
# ... |
github | rubocop/rubocop | https://github.com/rubocop/rubocop | lib/rubocop/cop/style/redundant_argument.rb | Ruby | mit | 12,856 | master | 4,207 | # frozen_string_literal: true
module RuboCop
module Cop
module Style
# Checks for a redundant argument passed to certain methods.
#
# NOTE: This cop is limited to methods with single parameter.
#
# Method names and their redundant arguments can be configured like this:
#
... |
github | rubocop/rubocop | https://github.com/rubocop/rubocop | lib/rubocop/cop/style/copyright.rb | Ruby | mit | 12,856 | master | 3,830 | # frozen_string_literal: true
module RuboCop
module Cop
module Style
# Checks that a copyright notice was given in each source file.
#
# The default regexp for an acceptable copyright notice can be found in
# config/default.yml. The default can be changed as follows:
#
# [sour... |
github | rubocop/rubocop | https://github.com/rubocop/rubocop | lib/rubocop/cop/style/trailing_body_on_module.rb | Ruby | mit | 12,856 | master | 950 | # frozen_string_literal: true
module RuboCop
module Cop
module Style
# Checks for trailing code after the module definition.
#
# @example
# # bad
# module Foo extend self
# end
#
# # good
# module Foo
# extend self
# end
#
... |
github | rubocop/rubocop | https://github.com/rubocop/rubocop | lib/rubocop/cop/style/numbered_parameters_limit.rb | Ruby | mit | 12,856 | master | 1,865 | # frozen_string_literal: true
module RuboCop
module Cop
module Style
# Detects use of an excessive amount of numbered parameters in a
# single block. Having too many numbered parameters can make code too
# cryptic and hard to read.
#
# The cop defaults to registering an offense if t... |
github | rubocop/rubocop | https://github.com/rubocop/rubocop | lib/rubocop/cop/style/tally_method.rb | Ruby | mit | 12,856 | master | 6,647 | # frozen_string_literal: true
module RuboCop
module Cop
module Style
# Checks for manual counting patterns that can be replaced by `Enumerable#tally`.
#
# The cop detects the following patterns:
#
# - `each_with_object(Hash.new(0)) { |item, counts| counts[item] += 1 }`
# - `gr... |
github | rubocop/rubocop | https://github.com/rubocop/rubocop | lib/rubocop/cop/style/redundant_fetch_block.rb | Ruby | mit | 12,856 | master | 3,461 | # frozen_string_literal: true
module RuboCop
module Cop
module Style
# Identifies places where `fetch(key) { value }` can be replaced by `fetch(key, value)`.
#
# In such cases `fetch(key, value)` method is faster than `fetch(key) { value }`.
#
# NOTE: The block string `'value'` in `... |
github | rubocop/rubocop | https://github.com/rubocop/rubocop | lib/rubocop/cop/style/in_pattern_then.rb | Ruby | mit | 12,856 | master | 1,622 | # frozen_string_literal: true
module RuboCop
module Cop
module Style
# Checks for `in;` uses in `case` expressions.
#
# @example
# # bad
# case expression
# in pattern_a; foo
# in pattern_b; bar
# end
#
# # good
# case expression
... |
github | rubocop/rubocop | https://github.com/rubocop/rubocop | lib/rubocop/cop/style/perl_backrefs.rb | Ruby | mit | 12,856 | master | 3,523 | # frozen_string_literal: true
module RuboCop
module Cop
module Style
# Looks for uses of Perl-style regexp match
# backreferences and their English versions like
# $1, $2, $&, &+, $MATCH, $PREMATCH, etc.
#
# @example
# # bad
# puts $1
#
# # good
#... |
github | rubocop/rubocop | https://github.com/rubocop/rubocop | lib/rubocop/cop/style/empty_literal.rb | Ruby | mit | 12,856 | master | 5,025 | # frozen_string_literal: true
module RuboCop
module Cop
module Style
# Checks for the use of a method, the result of which
# would be a literal, like an empty array, hash, or string.
#
# NOTE: When frozen string literals are enabled, `String.new`
# isn't corrected to an empty string... |
github | rubocop/rubocop | https://github.com/rubocop/rubocop | lib/rubocop/cop/style/yaml_file_read.rb | Ruby | mit | 12,856 | master | 1,887 | # frozen_string_literal: true
module RuboCop
module Cop
module Style
# Checks for the use of `YAML.load`, `YAML.safe_load`, and `YAML.parse` with
# `File.read` argument.
#
# NOTE: `YAML.safe_load_file` was introduced in Ruby 3.0.
#
# @example
#
# # bad
# ... |
github | rubocop/rubocop | https://github.com/rubocop/rubocop | lib/rubocop/cop/style/redundant_struct_keyword_init.rb | Ruby | mit | 12,856 | master | 3,864 | # frozen_string_literal: true
module RuboCop
module Cop
module Style
# Checks for redundant `keyword_init` option for `Struct.new`.
#
# Since Ruby 3.2, `keyword_init` in `Struct.new` defaults to `nil` behavior.
# Therefore, this cop detects and autocorrects redundant `keyword_init: nil`
... |
github | rubocop/rubocop | https://github.com/rubocop/rubocop | lib/rubocop/cop/style/lambda.rb | Ruby | mit | 12,856 | master | 3,486 | # frozen_string_literal: true
module RuboCop
module Cop
module Style
# (by default) checks for uses of the lambda literal syntax for
# single line lambdas, and the method call syntax for multiline lambdas.
# It is configurable to enforce one of the styles for both single line
# and multil... |
github | rubocop/rubocop | https://github.com/rubocop/rubocop | lib/rubocop/cop/style/multiple_comparison.rb | Ruby | mit | 12,856 | master | 4,955 | # frozen_string_literal: true
module RuboCop
module Cop
module Style
# Checks against comparing a variable with multiple items, where
# `Array#include?`, `Set#include?` or a `case` could be used instead
# to avoid code repetition.
# It accepts comparisons of multiple method calls to avoid... |
github | rubocop/rubocop | https://github.com/rubocop/rubocop | lib/rubocop/cop/style/redundant_array_constructor.rb | Ruby | mit | 12,856 | master | 2,039 | # frozen_string_literal: true
module RuboCop
module Cop
module Style
# Checks for the instantiation of array using redundant `Array` constructor.
# Autocorrect replaces to array literal which is the simplest and fastest.
#
# @example
#
# # bad
# Array.new([])
#... |
github | rubocop/rubocop | https://github.com/rubocop/rubocop | lib/rubocop/cop/style/class_check.rb | Ruby | mit | 12,856 | master | 1,424 | # frozen_string_literal: true
module RuboCop
module Cop
module Style
# Enforces consistent use of `Object#is_a?` or `Object#kind_of?`.
#
# @example EnforcedStyle: is_a? (default)
# # bad
# var.kind_of?(Date)
# var.kind_of?(Integer)
#
# # good
# var.... |
github | rubocop/rubocop | https://github.com/rubocop/rubocop | lib/rubocop/cop/style/keyword_arguments_merging.rb | Ruby | mit | 12,856 | master | 1,918 | # frozen_string_literal: true
module RuboCop
module Cop
module Style
# When passing an existing hash as keyword arguments, provide additional arguments
# directly rather than using `merge`.
#
# Providing arguments directly is more performant than using `merge`, and
# also leads to s... |
github | rubocop/rubocop | https://github.com/rubocop/rubocop | lib/rubocop/cop/style/method_def_parentheses.rb | Ruby | mit | 12,856 | master | 5,735 | # frozen_string_literal: true
module RuboCop
module Cop
module Style
# Checks for parentheses around the arguments in method
# definitions. Both instance and class/singleton methods are checked.
#
# Regardless of style, parentheses are necessary for:
#
# 1. Endless methods
... |
github | rubocop/rubocop | https://github.com/rubocop/rubocop | lib/rubocop/cop/style/invertible_unless_condition.rb | Ruby | mit | 12,856 | master | 5,102 | # frozen_string_literal: true
module RuboCop
module Cop
module Style
# Checks for usages of `unless` which can be replaced by `if` with inverted condition.
# Code without `unless` is easier to read, but that is subjective, so this cop
# is disabled by default.
#
# Methods that can b... |
github | rubocop/rubocop | https://github.com/rubocop/rubocop | lib/rubocop/cop/style/hash_fetch_chain.rb | Ruby | mit | 12,856 | master | 3,379 | # frozen_string_literal: true
module RuboCop
module Cop
module Style
# Use `Hash#dig` instead of chaining potentially null `fetch` calls.
#
# When `fetch(identifier, nil)` calls are chained on a hash, the expectation
# is that each step in the chain returns either `nil` or another hash,
... |
github | rubocop/rubocop | https://github.com/rubocop/rubocop | lib/rubocop/cop/style/if_unless_modifier_of_if_unless.rb | Ruby | mit | 12,856 | master | 1,229 | # frozen_string_literal: true
module RuboCop
module Cop
module Style
# Checks for if and unless statements used as modifiers of other if or
# unless statements.
#
# @example
#
# # bad
# tired? ? 'stop' : 'go faster' if running?
#
# # bad
# if ti... |
github | rubocop/rubocop | https://github.com/rubocop/rubocop | lib/rubocop/cop/style/string_literals.rb | Ruby | mit | 12,856 | master | 3,988 | # frozen_string_literal: true
module RuboCop
module Cop
module Style
# Checks if uses of quotes match the configured preference.
#
# @example EnforcedStyle: single_quotes (default)
# # bad
# "No special symbols"
# "No string interpolation"
# "Just text"
#
... |
github | rubocop/rubocop | https://github.com/rubocop/rubocop | lib/rubocop/cop/style/hash_each_methods.rb | Ruby | mit | 12,856 | master | 7,535 | # frozen_string_literal: true
module RuboCop
module Cop
module Style
# Checks for uses of `each_key` and `each_value` `Hash` methods.
#
# NOTE: If you have an array of two-element arrays, you can put
# parentheses around the block arguments to indicate that you're not
# working ... |
github | rubocop/rubocop | https://github.com/rubocop/rubocop | lib/rubocop/cop/style/frozen_string_literal_comment.rb | Ruby | mit | 12,856 | master | 7,026 | # frozen_string_literal: true
module RuboCop
module Cop
module Style
# Helps you transition from mutable string literals
# to frozen string literals.
# It will add the `# frozen_string_literal: true` magic comment to the top
# of files to enable frozen string literals. Frozen string liter... |
github | rubocop/rubocop | https://github.com/rubocop/rubocop | lib/rubocop/cop/style/date_time.rb | Ruby | mit | 12,856 | master | 2,747 | # frozen_string_literal: true
module RuboCop
module Cop
module Style
# Checks for consistent usage of the `DateTime` class over the
# `Time` class. This cop is disabled by default since these classes,
# although highly overlapping, have particularities that make them not
# replaceable in ... |
github | rubocop/rubocop | https://github.com/rubocop/rubocop | lib/rubocop/cop/style/float_division.rb | Ruby | mit | 12,856 | master | 5,065 | # frozen_string_literal: true
module RuboCop
module Cop
module Style
# Checks for division with integers coerced to floats.
# It is recommended to either always use `fdiv` or coerce one side only.
# This cop also provides other options for code consistency.
#
# For `Regexp.last_matc... |
github | rubocop/rubocop | https://github.com/rubocop/rubocop | lib/rubocop/cop/style/constant_visibility.rb | Ruby | mit | 12,856 | master | 2,859 | # frozen_string_literal: true
module RuboCop
module Cop
module Style
# Checks that constants defined in classes and modules have
# an explicit visibility declaration. By default, Ruby makes all class-
# and module constants public, which litters the public API of the
# class or module. Ex... |
github | rubocop/rubocop | https://github.com/rubocop/rubocop | lib/rubocop/cop/style/redundant_freeze.rb | Ruby | mit | 12,856 | master | 2,076 | # frozen_string_literal: true
module RuboCop
module Cop
module Style
# Checks for uses of `Object#freeze` on immutable objects.
#
# NOTE: `Regexp` and `Range` literals are frozen objects since Ruby 3.0.
#
# NOTE: From Ruby 3.0, this cop allows explicit freezing of interpolated
... |
github | rubocop/rubocop | https://github.com/rubocop/rubocop | lib/rubocop/cop/style/redundant_conditional.rb | Ruby | mit | 12,856 | master | 2,186 | # frozen_string_literal: true
module RuboCop
module Cop
module Style
# Checks for redundant returning of true/false in conditionals.
#
# @example
# # bad
# x == y ? true : false
#
# # bad
# if x == y
# true
# else
# false
#... |
github | rubocop/rubocop | https://github.com/rubocop/rubocop | lib/rubocop/cop/style/parallel_assignment.rb | Ruby | mit | 12,856 | master | 9,837 | # frozen_string_literal: true
module RuboCop
module Cop
module Style
# Checks for simple usages of parallel assignment.
# Parallel assignment is less readable than individual
# assignments and makes it harder to follow what each
# variable is being set to.
#
# This will only c... |
github | rubocop/rubocop | https://github.com/rubocop/rubocop | lib/rubocop/cop/style/comparable_clamp.rb | Ruby | mit | 12,856 | master | 3,762 | # frozen_string_literal: true
module RuboCop
module Cop
module Style
# Enforces the use of `Comparable#clamp` instead of comparison by minimum and maximum.
#
# This cop supports autocorrection for `if/elsif/else` bad style only.
# Because `ArgumentError` occurs if the minimum and maximum ... |
github | rubocop/rubocop | https://github.com/rubocop/rubocop | lib/rubocop/cop/style/optional_boolean_parameter.rb | Ruby | mit | 12,856 | master | 1,794 | # frozen_string_literal: true
module RuboCop
module Cop
module Style
# Checks for places where keyword arguments can be used instead of
# boolean arguments when defining methods. `respond_to_missing?` method is allowed by default.
# These are customizable with `AllowedMethods` option.
#
... |
github | rubocop/rubocop | https://github.com/rubocop/rubocop | lib/rubocop/cop/style/redundant_regexp_character_class.rb | Ruby | mit | 12,856 | master | 3,615 | # frozen_string_literal: true
module RuboCop
module Cop
module Style
# Checks for unnecessary single-element `Regexp` character classes.
#
# @example
#
# # bad
# r = /[x]/
#
# # good
# r = /x/
#
# # bad
# r = /[\s]/
#
... |
github | rubocop/rubocop | https://github.com/rubocop/rubocop | lib/rubocop/cop/style/collection_compact.rb | Ruby | mit | 12,856 | master | 5,368 | # frozen_string_literal: true
module RuboCop
module Cop
module Style
# Checks for places where custom logic on rejection nils from arrays
# and hashes can be replaced with `{Array,Hash}#{compact,compact!}`.
#
# @safety
# It is unsafe by default because false positives may occur in... |
github | rubocop/rubocop | https://github.com/rubocop/rubocop | lib/rubocop/cop/style/alias.rb | Ruby | mit | 12,856 | master | 5,476 | # frozen_string_literal: true
module RuboCop
module Cop
module Style
# Enforces the use of either `#alias` or `#alias_method`
# depending on configuration. Consistent use of one or the
# other prevents confusion about their different semantics
# (e.g., `alias` is resolved at parse time, w... |
github | rubocop/rubocop | https://github.com/rubocop/rubocop | lib/rubocop/cop/style/single_line_methods.rb | Ruby | mit | 12,856 | master | 4,944 | # frozen_string_literal: true
module RuboCop
module Cop
module Style
# Checks for single-line method definitions that contain a body.
# Single-line methods with a body are harder to read and debug
# than their multi-line equivalents. It will accept single-line
# methods with no body.
... |
github | rubocop/rubocop | https://github.com/rubocop/rubocop | lib/rubocop/cop/style/end_block.rb | Ruby | mit | 12,856 | master | 742 | # frozen_string_literal: true
module RuboCop
module Cop
module Style
# Checks for `END` blocks. `END` blocks are Perl-style constructs
# and `Kernel#at_exit` is the idiomatic Ruby alternative, as it's
# explicit and can be used anywhere.
#
# @example
# # bad
# END { ... |
github | rubocop/rubocop | https://github.com/rubocop/rubocop | lib/rubocop/cop/style/multiline_in_pattern_then.rb | Ruby | mit | 12,856 | master | 1,483 | # frozen_string_literal: true
module RuboCop
module Cop
module Style
# Checks uses of the `then` keyword in multi-line `in` statement.
#
# @example
# # bad
# case expression
# in pattern then
# end
#
# # good
# case expression
# in p... |
github | rubocop/rubocop | https://github.com/rubocop/rubocop | lib/rubocop/cop/style/top_level_method_definition.rb | Ruby | mit | 12,856 | master | 2,042 | # frozen_string_literal: true
module RuboCop
module Cop
module Style
# Newcomers to ruby applications may write top-level methods,
# when ideally they should be organized in appropriate classes or modules.
# This cop looks for definitions of top-level methods and warns about them.
#
... |
github | rubocop/rubocop | https://github.com/rubocop/rubocop | lib/rubocop/cop/style/array_first_last.rb | Ruby | mit | 12,856 | master | 2,292 | # frozen_string_literal: true
module RuboCop
module Cop
module Style
# Identifies usages of `arr[0]` and `arr[-1]` and suggests to change
# them to use `arr.first` and `arr.last` instead.
#
# The cop is disabled by default due to safety concerns.
#
# @safety
# This cop... |
github | rubocop/rubocop | https://github.com/rubocop/rubocop | lib/rubocop/cop/style/slicing_with_range.rb | Ruby | mit | 12,856 | master | 4,563 | # frozen_string_literal: true
module RuboCop
module Cop
module Style
# Checks that arrays are not sliced with the redundant `ary[0..-1]`, replacing it with `ary`,
# and ensures arrays are sliced with endless ranges instead of `ary[start..-1]` on Ruby 2.6+,
# and with beginless ranges instead of... |
github | rubocop/rubocop | https://github.com/rubocop/rubocop | lib/rubocop/cop/style/each_for_simple_loop.rb | Ruby | mit | 12,856 | master | 2,216 | # frozen_string_literal: true
module RuboCop
module Cop
module Style
# Checks for loops which iterate a constant number of times,
# using a `Range` literal and `#each`. This can be done more readably using
# `Integer#times`.
#
# This check only applies if the block takes no paramete... |
github | rubocop/rubocop | https://github.com/rubocop/rubocop | lib/rubocop/cop/style/for.rb | Ruby | mit | 12,856 | master | 2,377 | # frozen_string_literal: true
module RuboCop
module Cop
module Style
# Looks for uses of the `for` keyword or `each` method. The
# preferred alternative is set in the EnforcedStyle configuration
# parameter. An `each` call with a block on a single line is always
# allowed.
#
#... |
github | rubocop/rubocop | https://github.com/rubocop/rubocop | lib/rubocop/cop/style/class_and_module_children.rb | Ruby | mit | 12,856 | master | 8,072 | # frozen_string_literal: true
module RuboCop
module Cop
module Style
# Checks that namespaced classes and modules are defined with a consistent style.
#
# With `nested` style, classes and modules should be defined separately (one constant
# on each line, without `::`). With `compact` styl... |
github | rubocop/rubocop | https://github.com/rubocop/rubocop | lib/rubocop/cop/style/block_delimiters.rb | Ruby | mit | 12,856 | master | 15,844 | # frozen_string_literal: true
# rubocop:disable Metrics/ClassLength
module RuboCop
module Cop
module Style
# Checks for uses of braces or do/end around single line or
# multi-line blocks.
#
# Methods that can be either procedural or functional and cannot be
# categorised from their ... |
github | rubocop/rubocop | https://github.com/rubocop/rubocop | lib/rubocop/cop/style/reduce_to_hash.rb | Ruby | mit | 12,856 | master | 6,260 | # frozen_string_literal: true
module RuboCop
module Cop
module Style
# Checks for `each_with_object`, `inject`, and `reduce` calls that build
# a hash from an enumerable, where `to_h` with a block could be used instead.
#
# This cop complements `Style/HashTransformKeys` and `Style/HashTra... |
github | rubocop/rubocop | https://github.com/rubocop/rubocop | lib/rubocop/cop/style/each_with_object.rb | Ruby | mit | 12,856 | master | 4,524 | # frozen_string_literal: true
module RuboCop
module Cop
module Style
# Looks for inject / reduce calls where the passed in object is
# returned at the end and so could be replaced by each_with_object without
# the need to return the object at the end.
#
# However, we can't replace w... |
github | rubocop/rubocop | https://github.com/rubocop/rubocop | lib/rubocop/cop/style/multiline_if_then.rb | Ruby | mit | 12,856 | master | 1,222 | # frozen_string_literal: true
module RuboCop
module Cop
module Style
# Checks for uses of the `then` keyword in multi-line `if` statements.
# In multi-line `if` statements, `then` is redundant because the newline
# already separates the condition from the body.
#
# @example
# ... |
github | rubocop/rubocop | https://github.com/rubocop/rubocop | lib/rubocop/cop/style/expand_path_arguments.rb | Ruby | mit | 12,856 | master | 5,918 | # frozen_string_literal: true
module RuboCop
module Cop
module Style
# Checks for use of the `File.expand_path` arguments.
# Likewise, it also checks for the `Pathname.new` argument.
#
# Contrastive bad case and good case are alternately shown in
# the following examples.
#
... |
github | rubocop/rubocop | https://github.com/rubocop/rubocop | lib/rubocop/cop/style/dig_chain.rb | Ruby | mit | 12,856 | master | 2,664 | # frozen_string_literal: true
module RuboCop
module Cop
module Style
# Checks for chained `dig` calls that can be collapsed into a single `dig`.
#
# @safety
# This cop is unsafe because it cannot be guaranteed that the receiver
# is an `Enumerable` or does not have a nonstandard... |
github | rubocop/rubocop | https://github.com/rubocop/rubocop | lib/rubocop/cop/style/optional_arguments.rb | Ruby | mit | 12,856 | master | 1,622 | # frozen_string_literal: true
module RuboCop
module Cop
module Style
# Checks for optional arguments to methods
# that do not come at the end of the argument list.
#
# @safety
# This cop is unsafe because changing a method signature will
# implicitly change behavior.
... |
github | rubocop/rubocop | https://github.com/rubocop/rubocop | lib/rubocop/cop/style/symbol_array.rb | Ruby | mit | 12,856 | master | 4,053 | # frozen_string_literal: true
module RuboCop
module Cop
module Style
# Checks for array literals made up of symbols that are not
# using the %i() syntax.
#
# Alternatively, it checks for symbol arrays using the %i() syntax on
# projects which do not want to use that syntax, perhaps ... |
github | rubocop/rubocop | https://github.com/rubocop/rubocop | lib/rubocop/cop/style/semicolon.rb | Ruby | mit | 12,856 | master | 6,399 | # frozen_string_literal: true
module RuboCop
module Cop
module Style
# Checks for multiple expressions placed on the same line.
# It also checks for lines terminated with a semicolon.
# In idiomatic Ruby, each expression should be on its own line
# for readability.
#
# This co... |
github | rubocop/rubocop | https://github.com/rubocop/rubocop | lib/rubocop/cop/style/missing_respond_to_missing.rb | Ruby | mit | 12,856 | master | 2,204 | # frozen_string_literal: true
module RuboCop
module Cop
module Style
# Checks for the presence of `method_missing` without also
# defining `respond_to_missing?`.
#
# Not defining `respond_to_missing?` will cause metaprogramming
# methods like `respond_to?` to behave unexpectedly:
... |
github | rubocop/rubocop | https://github.com/rubocop/rubocop | lib/rubocop/cop/style/if_with_boolean_literal_branches.rb | Ruby | mit | 12,856 | master | 5,027 | # frozen_string_literal: true
module RuboCop
module Cop
module Style
# Checks for redundant `if` with boolean literal branches.
# It checks only conditions to return boolean value (`true` or `false`) for safe detection.
# The conditions to be checked are comparison methods, predicate methods, a... |
github | rubocop/rubocop | https://github.com/rubocop/rubocop | lib/rubocop/cop/style/while_until_do.rb | Ruby | mit | 12,856 | master | 1,063 | # frozen_string_literal: true
module RuboCop
module Cop
module Style
# Checks for uses of `do` in multi-line `while/until` statements.
#
# @example
#
# # bad
# while x.any? do
# do_something(x.pop)
# end
#
# # good
# while x.any?
... |
github | rubocop/rubocop | https://github.com/rubocop/rubocop | lib/rubocop/cop/style/map_to_set.rb | Ruby | mit | 12,856 | master | 1,852 | # frozen_string_literal: true
module RuboCop
module Cop
module Style
# Looks for uses of `map.to_set` or `collect.to_set` that could be
# written with just `to_set`.
#
# @safety
# This cop is unsafe, as it can produce false positives if the receiver
# is not an `Enumerable... |
github | rubocop/rubocop | https://github.com/rubocop/rubocop | lib/rubocop/cop/style/struct_inheritance.rb | Ruby | mit | 12,856 | master | 2,476 | # frozen_string_literal: true
module RuboCop
module Cop
module Style
# Checks for inheritance from `Struct.new`. Inheriting from `Struct.new`
# adds a superfluous level in inheritance tree.
#
# @safety
# Autocorrection is unsafe because it will change the inheritance
# tre... |
github | rubocop/rubocop | https://github.com/rubocop/rubocop | lib/rubocop/cop/style/even_odd.rb | Ruby | mit | 12,856 | master | 1,395 | # frozen_string_literal: true
module RuboCop
module Cop
module Style
# Checks for places where `Integer#even?` or `Integer#odd?`
# can be used.
#
# @example
#
# # bad
# if x % 2 == 0
# end
#
# # good
# if x.even?
# end
clas... |
github | rubocop/rubocop | https://github.com/rubocop/rubocop | lib/rubocop/cop/style/redundant_filter_chain.rb | Ruby | mit | 12,856 | master | 3,739 | # frozen_string_literal: true
module RuboCop
module Cop
module Style
# Identifies usages of `any?`, `empty?` or `none?` predicate methods
# chained to `select`/`filter`/`find_all` and change them to use predicate method instead.
#
# @safety
# This cop's autocorrection is unsafe be... |
github | rubocop/rubocop | https://github.com/rubocop/rubocop | lib/rubocop/cop/style/begin_block.rb | Ruby | mit | 12,856 | master | 536 | # frozen_string_literal: true
module RuboCop
module Cop
module Style
# Checks for `BEGIN` blocks. They are Perl-style constructs that execute
# code before the rest of the file is parsed, making the control flow
# harder to follow and reason about.
#
# @example
# # bad
... |
github | rubocop/rubocop | https://github.com/rubocop/rubocop | lib/rubocop/cop/style/colon_method_definition.rb | Ruby | mit | 12,856 | master | 792 | # frozen_string_literal: true
module RuboCop
module Cop
module Style
# Checks for class methods that are defined using the `::`
# operator instead of the `.` operator.
#
# @example
# # bad
# class Foo
# def self::bar
# end
# end
#
# ... |
github | rubocop/rubocop | https://github.com/rubocop/rubocop | lib/rubocop/cop/style/negated_while.rb | Ruby | mit | 12,856 | master | 881 | # frozen_string_literal: true
module RuboCop
module Cop
module Style
# Checks for uses of while with a negated condition.
#
# @example
# # bad
# while !foo
# bar
# end
#
# # good
# until foo
# bar
# end
#
# ... |
github | rubocop/rubocop | https://github.com/rubocop/rubocop | lib/rubocop/cop/style/concat_array_literals.rb | Ruby | mit | 12,856 | master | 2,943 | # frozen_string_literal: true
module RuboCop
module Cop
module Style
# Enforces the use of `Array#push(item)` instead of `Array#concat([item])`
# to avoid redundant array literals.
#
# @safety
# This cop is unsafe, as it can produce false positives if the receiver
# is not... |
github | rubocop/rubocop | https://github.com/rubocop/rubocop | lib/rubocop/cop/style/redundant_assignment.rb | Ruby | mit | 12,856 | master | 2,891 | # frozen_string_literal: true
module RuboCop
module Cop
module Style
# Checks for redundant assignment before returning.
#
# @example
# # bad
# def test
# x = foo
# x
# end
#
# # bad
# def test
# if x
# z = ... |
github | rubocop/rubocop | https://github.com/rubocop/rubocop | lib/rubocop/cop/style/double_cop_disable_directive.rb | Ruby | mit | 12,856 | master | 1,418 | # frozen_string_literal: true
# rubocop:disable Lint/RedundantCopDisableDirective
# rubocop:disable Style/DoubleCopDisableDirective
module RuboCop
module Cop
module Style
# Detects double disable comments on one line. This is mostly to catch
# automatically generated comments that need to be regener... |
github | rubocop/rubocop | https://github.com/rubocop/rubocop | lib/rubocop/cop/style/it_block_parameter.rb | Ruby | mit | 12,856 | master | 3,752 | # frozen_string_literal: true
module RuboCop
module Cop
module Style
# Checks for blocks with one argument where `it` block parameter can be used.
#
# It provides four `EnforcedStyle` options:
#
# 1. `allow_single_line` (default) ... Always uses the `it` block parameter in a single ... |
github | rubocop/rubocop | https://github.com/rubocop/rubocop | lib/rubocop/cop/style/def_with_parentheses.rb | Ruby | mit | 12,856 | master | 1,724 | # frozen_string_literal: true
module RuboCop
module Cop
module Style
# Checks for parentheses in the definition of a method,
# that does not take any arguments. Both instance and
# class/singleton methods are checked.
#
# @example
#
# # bad
# def foo()
# ... |
github | rubocop/rubocop | https://github.com/rubocop/rubocop | lib/rubocop/cop/style/file_read.rb | Ruby | mit | 12,856 | master | 2,879 | # frozen_string_literal: true
module RuboCop
module Cop
module Style
# Favor `File.(bin)read` convenience methods.
#
# @example
# # bad - text mode
# File.open(filename).read
# File.open(filename, &:read)
# File.open(filename) { |f| f.read }
# File.open(f... |
github | rubocop/rubocop | https://github.com/rubocop/rubocop | lib/rubocop/cop/style/hash_except.rb | Ruby | mit | 12,856 | master | 2,637 | # frozen_string_literal: true
module RuboCop
module Cop
module Style
# Checks for usages of `Hash#reject`, `Hash#select`, and `Hash#filter` methods
# that can be replaced with `Hash#except` method.
#
# This cop should only be enabled on Ruby version 3.0 or higher.
# (`Hash#except` w... |
github | rubocop/rubocop | https://github.com/rubocop/rubocop | lib/rubocop/cop/style/strip.rb | Ruby | mit | 12,856 | master | 1,157 | # frozen_string_literal: true
module RuboCop
module Cop
module Style
# Identifies places where `lstrip.rstrip` can be replaced by
# `strip`.
#
# @example
# # bad
# 'abc'.lstrip.rstrip
# 'abc'.rstrip.lstrip
#
# # good
# 'abc'.strip
class ... |
github | rubocop/rubocop | https://github.com/rubocop/rubocop | lib/rubocop/cop/style/if_inside_else.rb | Ruby | mit | 12,856 | master | 4,790 | # frozen_string_literal: true
module RuboCop
module Cop
module Style
# If the `else` branch of a conditional consists solely of an `if` node,
# it can be combined with the `else` to become an `elsif`.
# This helps to keep the nesting level from getting too deep.
#
# @example
#... |
github | rubocop/rubocop | https://github.com/rubocop/rubocop | lib/rubocop/cop/style/if_with_semicolon.rb | Ruby | mit | 12,856 | master | 4,180 | # frozen_string_literal: true
module RuboCop
module Cop
module Style
# Checks for uses of semicolon in if statements.
#
# @example
#
# # bad
# result = if some_condition; something else another_thing end
#
# # good
# result = some_condition ? somethin... |
github | rubocop/rubocop | https://github.com/rubocop/rubocop | lib/rubocop/cop/style/or_assignment.rb | Ruby | mit | 12,856 | master | 2,534 | # frozen_string_literal: true
module RuboCop
module Cop
module Style
# Checks for potential usage of the `||=` operator.
#
# @example
# # bad
# name = name ? name : 'Bozhidar'
#
# # bad
# name = if name
# name
# else
# ... |
github | rubocop/rubocop | https://github.com/rubocop/rubocop | lib/rubocop/cop/style/trivial_accessors.rb | Ruby | mit | 12,856 | master | 6,557 | # frozen_string_literal: true
module RuboCop
module Cop
module Style
# Looks for trivial reader/writer methods, that could
# have been created with the attr_* family of functions automatically.
# `to_ary`, `to_a`, `to_c`, `to_enum`, `to_h`, `to_hash`, `to_i`, `to_int`, `to_io`,
# `to_open... |
github | rubocop/rubocop | https://github.com/rubocop/rubocop | lib/rubocop/cop/style/single_line_block_params.rb | Ruby | mit | 12,856 | master | 4,052 | # frozen_string_literal: true
module RuboCop
module Cop
module Style
# Checks whether the block parameters of a single-line
# method accepting a block match the names specified via configuration.
#
# For instance one can configure `reduce`(`inject`) to use |a, e| as
# parameters.
... |
github | rubocop/rubocop | https://github.com/rubocop/rubocop | lib/rubocop/cop/style/redundant_current_directory_in_path.rb | Ruby | mit | 12,856 | master | 1,500 | # frozen_string_literal: true
module RuboCop
module Cop
module Style
# Checks for paths given to `require_relative` that start with
# the current directory (`./`), which can be omitted.
#
# @example
#
# # bad
# require_relative './path/to/feature'
#
# #... |
github | rubocop/rubocop | https://github.com/rubocop/rubocop | lib/rubocop/cop/style/array_intersect.rb | Ruby | mit | 12,856 | master | 6,109 | # frozen_string_literal: true
module RuboCop
module Cop
module Style
# In Ruby 3.1, `Array#intersect?` has been added.
#
# This cop identifies places where:
#
# * `(array1 & array2).any?`
# * `(array1.intersection(array2)).any?`
# * `array1.any? { |elem| array2.member?(e... |
github | rubocop/rubocop | https://github.com/rubocop/rubocop | lib/rubocop/cop/style/symbol_literal.rb | Ruby | mit | 12,856 | master | 590 | # frozen_string_literal: true
module RuboCop
module Cop
module Style
# Checks symbol literal syntax.
#
# @example
#
# # bad
# :"symbol"
#
# # good
# :symbol
class SymbolLiteral < Base
extend AutoCorrector
MSG = 'Do not use strin... |
github | rubocop/rubocop | https://github.com/rubocop/rubocop | lib/rubocop/cop/style/format_string_token.rb | Ruby | mit | 12,856 | master | 10,235 | # frozen_string_literal: true
module RuboCop
module Cop
module Style
# Use a consistent style for tokens within a format string.
#
# By default, all strings are evaluated. In some cases, this may be undesirable,
# as they could be used as arguments to a method that does not consider
... |
github | rubocop/rubocop | https://github.com/rubocop/rubocop | lib/rubocop/cop/style/lambda_call.rb | Ruby | mit | 12,856 | master | 2,008 | # frozen_string_literal: true
module RuboCop
module Cop
module Style
# Checks for use of the lambda.(args) syntax.
#
# @example EnforcedStyle: call (default)
# # bad
# lambda.(x, y)
#
# # good
# lambda.call(x, y)
#
# @example EnforcedStyle: brac... |
github | rubocop/rubocop | https://github.com/rubocop/rubocop | lib/rubocop/cop/style/non_nil_check.rb | Ruby | mit | 12,856 | master | 4,655 | # frozen_string_literal: true
module RuboCop
module Cop
module Style
# Checks for non-nil checks, which are usually redundant.
#
# With `IncludeSemanticChanges` set to `false` by default, this cop
# does not report offenses for `!x.nil?` and does no changes that might
# change behav... |
github | rubocop/rubocop | https://github.com/rubocop/rubocop | lib/rubocop/cop/style/min_max_comparison.rb | Ruby | mit | 12,856 | master | 2,760 | # frozen_string_literal: true
module RuboCop
module Cop
module Style
# Enforces the use of `max` or `min` instead of comparison for greater or less.
#
# NOTE: It can be used if you want to present limit or threshold in Ruby 2.7+.
# That it is slow though. So autocorrection will apply gene... |
github | rubocop/rubocop | https://github.com/rubocop/rubocop | lib/rubocop/cop/style/symbol_proc.rb | Ruby | mit | 12,856 | master | 9,561 | # frozen_string_literal: true
module RuboCop
module Cop
module Style
# Use symbols as procs when possible.
#
# If you prefer a style that allows block for method with arguments,
# please set `true` to `AllowMethodsWithArguments`.
# `define_method?` methods are allowed by default.
... |
github | rubocop/rubocop | https://github.com/rubocop/rubocop | lib/rubocop/cop/style/unpack_first.rb | Ruby | mit | 12,856 | master | 1,789 | # frozen_string_literal: true
module RuboCop
module Cop
module Style
# Checks for accessing the first element of `String#unpack`
# which can be replaced with the shorter method `unpack1`.
#
# @example
#
# # bad
# 'foo'.unpack('h*').first
# 'foo'.unpack('h*')[... |
github | rubocop/rubocop | https://github.com/rubocop/rubocop | lib/rubocop/cop/style/hash_transform_keys.rb | Ruby | mit | 12,856 | master | 3,504 | # frozen_string_literal: true
module RuboCop
module Cop
module Style
# Looks for uses of `+_.each_with_object({}) {...}+`,
# `+_.map {...}.to_h+`, and `+Hash[_.map {...}]+` that are actually just
# transforming the keys of a hash, and tries to use a simpler & faster
# call to `transform_k... |
github | rubocop/rubocop | https://github.com/rubocop/rubocop | lib/rubocop/cop/style/redundant_double_splat_hash_braces.rb | Ruby | mit | 12,856 | master | 3,881 | # frozen_string_literal: true
module RuboCop
module Cop
module Style
# Checks for redundant uses of double splat hash braces.
#
# @example
#
# # bad
# do_something(**{foo: bar, baz: qux})
#
# # good
# do_something(foo: bar, baz: qux)
#
# ... |
github | rubocop/rubocop | https://github.com/rubocop/rubocop | lib/rubocop/cop/style/single_argument_dig.rb | Ruby | mit | 12,856 | master | 2,191 | # frozen_string_literal: true
module RuboCop
module Cop
module Style
# Sometimes using `dig` method ends up with just a single
# argument. In such cases, dig should be replaced with `[]`.
#
# Since replacing `hash&.dig(:key)` with `hash[:key]` could potentially lead to error,
# call... |
github | rubocop/rubocop | https://github.com/rubocop/rubocop | lib/rubocop/cop/style/numbered_parameters.rb | Ruby | mit | 12,856 | master | 1,207 | # frozen_string_literal: true
module RuboCop
module Cop
module Style
# Checks for numbered parameters.
#
# It can either restrict the use of numbered parameters to
# single-lined blocks, or disallow completely numbered parameters.
#
# @example EnforcedStyle: allow_single_line ... |
github | rubocop/rubocop | https://github.com/rubocop/rubocop | lib/rubocop/cop/style/open_struct_use.rb | Ruby | mit | 12,856 | master | 1,903 | # frozen_string_literal: true
module RuboCop
module Cop
module Style
# Flags uses of `OpenStruct`, as it is now officially discouraged
# to be used for performance, version compatibility, and potential security issues.
#
# @safety
# Note that this cop may flag false positives; for... |
github | rubocop/rubocop | https://github.com/rubocop/rubocop | lib/rubocop/cop/style/empty_else.rb | Ruby | mit | 12,856 | master | 4,617 | # frozen_string_literal: true
module RuboCop
module Cop
module Style
# Checks for empty else-clauses, possibly including comments and/or an
# explicit `nil` depending on the EnforcedStyle.
#
# @example EnforcedStyle: both (default)
# # warn on empty else and else with nil in it
... |
github | rubocop/rubocop | https://github.com/rubocop/rubocop | lib/rubocop/cop/style/hash_syntax.rb | Ruby | mit | 12,856 | master | 9,440 | # frozen_string_literal: true
module RuboCop
module Cop
module Style
# Checks hash literal syntax.
#
# It can enforce either the use of the class hash rocket syntax or
# the use of the newer Ruby 1.9 syntax (when applicable).
#
# A separate offense is registered for each probl... |
github | rubocop/rubocop | https://github.com/rubocop/rubocop | lib/rubocop/cop/style/class_methods.rb | Ruby | mit | 12,856 | master | 1,401 | # frozen_string_literal: true
module RuboCop
module Cop
module Style
# Checks for uses of the class/module name instead of
# self, when defining class/module methods.
#
# @example
# # bad
# class SomeClass
# def SomeClass.class_method
# # ...
# ... |
github | rubocop/rubocop | https://github.com/rubocop/rubocop | lib/rubocop/cop/style/method_called_on_do_end_block.rb | Ruby | mit | 12,856 | master | 1,465 | # frozen_string_literal: true
module RuboCop
module Cop
module Style
# Checks for methods called on a do...end block. The point of
# this check is that it's easy to miss the call tacked on to the block
# when reading code.
#
# @example
# # bad
# a do
# b
... |
github | rubocop/rubocop | https://github.com/rubocop/rubocop | lib/rubocop/cop/style/mutable_constant.rb | Ruby | mit | 12,856 | master | 8,161 | # frozen_string_literal: true
module RuboCop
module Cop
module Style
# Checks whether some constant value isn't a
# mutable literal (e.g. array or hash).
#
# Strict mode can be used to freeze all constants, rather than
# just literals.
# Strict mode is considered an experiment... |
github | rubocop/rubocop | https://github.com/rubocop/rubocop | lib/rubocop/cop/style/hash_slice.rb | Ruby | mit | 12,856 | master | 2,629 | # frozen_string_literal: true
module RuboCop
module Cop
module Style
# Checks for usages of `Hash#reject`, `Hash#select`, and `Hash#filter` methods
# that can be replaced with `Hash#slice` method.
#
# This cop should only be enabled on Ruby version 2.5 or higher.
# (`Hash#slice` was... |
github | rubocop/rubocop | https://github.com/rubocop/rubocop | lib/rubocop/cop/style/sole_nested_conditional.rb | Ruby | mit | 12,856 | master | 8,308 | # frozen_string_literal: true
module RuboCop
module Cop
module Style
# If the branch of a conditional consists solely of a conditional node,
# its conditions can be combined with the conditions of the outer branch.
# This helps to keep the nesting level from getting too deep.
#
# @e... |
github | rubocop/rubocop | https://github.com/rubocop/rubocop | lib/rubocop/cop/style/string_chars.rb | Ruby | mit | 12,856 | master | 1,231 | # frozen_string_literal: true
module RuboCop
module Cop
module Style
# Checks for uses of `String#split` with empty string or regexp literal argument.
#
# @safety
# This cop is unsafe because it cannot be guaranteed that the receiver
# is actually a string. If another class has ... |
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