Showing 106 of 106 total issues
This conditional expression can just be replaced by check == 0
. Open
check == 0 ? true : false
- Read upRead up
- Exclude checks
This cop checks for redundant returning of true/false in conditionals.
Example:
# bad
x == y ? true : false
# bad
if x == y
true
else
false
end
# good
x == y
# bad
x == y ? false : true
# good
x != y
required_ruby_version
(2.2, declared in rorr.gemspec) and TargetRubyVersion
(2.1, declared in .rubocop.yml) should be equal. Open
spec.required_ruby_version = '>= 2.2.0'
- Read upRead up
- Exclude checks
Checks that required_ruby_version
of gemspec and TargetRubyVersion
of .rubocop.yml are equal.
Thereby, RuboCop to perform static analysis working on the version
required by gemspec.
Example:
# When `TargetRubyVersion` of .rubocop.yml is `2.3`.
# bad
Gem::Specification.new do |spec|
spec.required_ruby_version = '>= 2.2.0'
end
# bad
Gem::Specification.new do |spec|
spec.required_ruby_version = '>= 2.4.0'
end
# good
Gem::Specification.new do |spec|
spec.required_ruby_version = '>= 2.3.0'
end
# good
Gem::Specification.new do |spec|
spec.required_ruby_version = '>= 2.3'
end
# good
Gem::Specification.new do |spec|
spec.required_ruby_version = ['>= 2.3.0', '< 2.5.0']
end
Prefer single-quoted strings when you don't need string interpolation or special symbols. Open
spec.add_development_dependency "bundler", "~> 1.11"
- Read upRead up
- Exclude checks
Checks if uses of quotes match the configured preference.
Example: EnforcedStyle: single_quotes (default)
# bad
"No special symbols"
"No string interpolation"
"Just text"
# good
'No special symbols'
'No string interpolation'
'Just text'
"Wait! What's #{this}!"
Example: EnforcedStyle: double_quotes
# bad
'Just some text'
'No special chars or interpolation'
# good
"Just some text"
"No special chars or interpolation"
"Every string in #{project} uses double_quotes"
Prefer single-quoted strings when you don't need string interpolation or special symbols. Open
require "bundler/setup"
- Read upRead up
- Exclude checks
Checks if uses of quotes match the configured preference.
Example: EnforcedStyle: single_quotes (default)
# bad
"No special symbols"
"No string interpolation"
"Just text"
# good
'No special symbols'
'No string interpolation'
'Just text'
"Wait! What's #{this}!"
Example: EnforcedStyle: double_quotes
# bad
'Just some text'
'No special chars or interpolation'
# good
"Just some text"
"No special chars or interpolation"
"Every string in #{project} uses double_quotes"
Prefer single-quoted strings when you don't need string interpolation or special symbols. Open
require "rorr"
- Read upRead up
- Exclude checks
Checks if uses of quotes match the configured preference.
Example: EnforcedStyle: single_quotes (default)
# bad
"No special symbols"
"No string interpolation"
"Just text"
# good
'No special symbols'
'No string interpolation'
'Just text'
"Wait! What's #{this}!"
Example: EnforcedStyle: double_quotes
# bad
'Just some text'
'No special chars or interpolation'
# good
"Just some text"
"No special chars or interpolation"
"Every string in #{project} uses double_quotes"
%w
-literals should be delimited by [
and ]
. Open
@dir = %w(ruby rails)
- Read upRead up
- Exclude checks
This cop enforces the consistent usage of %
-literal delimiters.
Specify the 'default' key to set all preferred delimiters at once. You can continue to specify individual preferred delimiters to override the default.
Example:
# Style/PercentLiteralDelimiters:
# PreferredDelimiters:
# default: '[]'
# '%i': '()'
# good
%w[alpha beta] + %i(gamma delta)
# bad
%W(alpha #{beta})
# bad
%I(alpha beta)
Prefer single-quoted strings when you don't need string interpolation or special symbols. Open
VERSION = "0.1.3"
- Read upRead up
- Exclude checks
Checks if uses of quotes match the configured preference.
Example: EnforcedStyle: single_quotes (default)
# bad
"No special symbols"
"No string interpolation"
"Just text"
# good
'No special symbols'
'No string interpolation'
'Just text'
"Wait! What's #{this}!"
Example: EnforcedStyle: double_quotes
# bad
'Just some text'
'No special chars or interpolation'
# good
"Just some text"
"No special chars or interpolation"
"Every string in #{project} uses double_quotes"
Line is too long. [171/80] Open
puts " #{repo_rjust(Score.total_count, 3)} | #{repo_format(Score.total[:correct])} | #{repo_format(Score.total[:skip])} | #{repo_format(Score.total[:retry])}"
- Exclude checks
Line is too long. [101/80] Open
Dir[File.expand_path("../../../topic/questions/#{Config.level}/*.rb", __FILE__)].each do |file|
- Exclude checks
The use of eval
is a serious security risk. Open
eval(code)
- Read upRead up
- Exclude checks
This cop checks for the use of Kernel#eval
and Binding#eval
.
Example:
# bad
eval(something)
binding.eval(something)
Prefer single-quoted strings when you don't need string interpolation or special symbols. Open
spec.email = ["mgleon08@gmail.com"]
- Read upRead up
- Exclude checks
Checks if uses of quotes match the configured preference.
Example: EnforcedStyle: single_quotes (default)
# bad
"No special symbols"
"No string interpolation"
"Just text"
# good
'No special symbols'
'No string interpolation'
'Just text'
"Wait! What's #{this}!"
Example: EnforcedStyle: double_quotes
# bad
'Just some text'
'No special chars or interpolation'
# good
"Just some text"
"No special chars or interpolation"
"Every string in #{project} uses double_quotes"
Prefer single-quoted strings when you don't need string interpolation or special symbols. Open
spec.require_paths = ["lib"]
- Read upRead up
- Exclude checks
Checks if uses of quotes match the configured preference.
Example: EnforcedStyle: single_quotes (default)
# bad
"No special symbols"
"No string interpolation"
"Just text"
# good
'No special symbols'
'No string interpolation'
'Just text'
"Wait! What's #{this}!"
Example: EnforcedStyle: double_quotes
# bad
'Just some text'
'No special chars or interpolation'
# good
"Just some text"
"No special chars or interpolation"
"Every string in #{project} uses double_quotes"
Prefer single-quoted strings when you don't need string interpolation or special symbols. Open
spec.add_runtime_dependency "coderay", "~> 1.1"
- Read upRead up
- Exclude checks
Checks if uses of quotes match the configured preference.
Example: EnforcedStyle: single_quotes (default)
# bad
"No special symbols"
"No string interpolation"
"Just text"
# good
'No special symbols'
'No string interpolation'
'Just text'
"Wait! What's #{this}!"
Example: EnforcedStyle: double_quotes
# bad
'Just some text'
'No special chars or interpolation'
# good
"Just some text"
"No special chars or interpolation"
"Every string in #{project} uses double_quotes"
Prefer single-quoted strings when you don't need string interpolation or special symbols. Open
desc "Run RSpec"
- Read upRead up
- Exclude checks
Checks if uses of quotes match the configured preference.
Example: EnforcedStyle: single_quotes (default)
# bad
"No special symbols"
"No string interpolation"
"Just text"
# good
'No special symbols'
'No string interpolation'
'Just text'
"Wait! What's #{this}!"
Example: EnforcedStyle: double_quotes
# bad
'Just some text'
'No special chars or interpolation'
# good
"Just some text"
"No special chars or interpolation"
"Every string in #{project} uses double_quotes"
Use ==
if you meant to do a comparison or wrap the expression in parentheses to indicate you meant to assign in a condition. Open
while answer = UI.gets
- Read upRead up
- Exclude checks
This cop checks for assignments in the conditions of if/while/until.
Example:
# bad
if some_var = true
do_something
end
Example:
# good
if some_var == true
do_something
end
Use ==
if you meant to do a comparison or wrap the expression in parentheses to indicate you meant to assign in a condition. Open
while answer = UI.gets
- Read upRead up
- Exclude checks
This cop checks for assignments in the conditions of if/while/until.
Example:
# bad
if some_var = true
do_something
end
Example:
# good
if some_var == true
do_something
end
Use check.zero?
instead of check == 0
. Open
check == 0 ? true : false
- Read upRead up
- Exclude checks
This cop checks for usage of comparison operators (==
,
>
, <
) to test numbers as zero, positive, or negative.
These can be replaced by their respective predicate methods.
The cop can also be configured to do the reverse.
The cop disregards #nonzero?
as it its value is truthy or falsey,
but not true
and false
, and thus not always interchangeable with
!= 0
.
The cop ignores comparisons to global variables, since they are often
populated with objects which can be compared with integers, but are
not themselves Interger
polymorphic.
Example: EnforcedStyle: predicate (default)
# bad
foo == 0
0 > foo
bar.baz > 0
# good
foo.zero?
foo.negative?
bar.baz.positive?
Example: EnforcedStyle: comparison
# bad
foo.zero?
foo.negative?
bar.baz.positive?
# good
foo == 0
0 > foo
bar.baz > 0
Missing top-level class documentation comment. Open
class Score
- Read upRead up
- Exclude checks
This cop checks for missing top-level documentation of classes and modules. Classes with no body are exempt from the check and so are namespace modules - modules that have nothing in their bodies except classes, other modules, or constant definitions.
The documentation requirement is annulled if the class or module has a "#:nodoc:" comment next to it. Likewise, "#:nodoc: all" does the same for all its children.
Example:
# bad
class Person
# ...
end
# good
# Description/Explanation of Person class
class Person
# ...
end
Line is too long. [157/80] Open
UI.puts "What's the return value? (Type the #{'Exception'.green} or #{'SyntaxError'.green} if you expect it will return, #{UI.skip}, #{UI.exit})\n\n"
- Exclude checks
Dependencies should be sorted in an alphabetical order within their section of the gemspec. Dependency coderay
should appear before colorize
. Open
spec.add_runtime_dependency "coderay", "~> 1.1"
- Read upRead up
- Exclude checks
Dependencies in the gemspec should be alphabetically sorted.
Example:
# bad
spec.add_dependency 'rubocop'
spec.add_dependency 'rspec'
# good
spec.add_dependency 'rspec'
spec.add_dependency 'rubocop'
# good
spec.add_dependency 'rubocop'
spec.add_dependency 'rspec'
# bad
spec.add_development_dependency 'rubocop'
spec.add_development_dependency 'rspec'
# good
spec.add_development_dependency 'rspec'
spec.add_development_dependency 'rubocop'
# good
spec.add_development_dependency 'rubocop'
spec.add_development_dependency 'rspec'
# bad
spec.add_runtime_dependency 'rubocop'
spec.add_runtime_dependency 'rspec'
# good
spec.add_runtime_dependency 'rspec'
spec.add_runtime_dependency 'rubocop'
# good
spec.add_runtime_dependency 'rubocop'
spec.add_runtime_dependency 'rspec'
# good only if TreatCommentsAsGroupSeparators is true
# For code quality
spec.add_dependency 'rubocop'
# For tests
spec.add_dependency 'rspec'