Favor format
over String#%
. (https://github.com/bbatsov/ruby-style-guide#sprintf) Open
script = template % { avsh_version: Avsh::VERSION, avsh_libs: avsh_libs }
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This cop enforces the use of a single string formatting utility. Valid options include Kernel#format, Kernel#sprintf and String#%.
The detection of String#% cannot be implemented in a reliable manner for all cases, so only two scenarios are considered - if the first argument is a string literal and if the second argument is an array literal.
Example: EnforcedStyle: format(default)
# bad
puts sprintf('%10s', 'hoge')
puts '%10s' % 'hoge'
# good
puts format('%10s', 'hoge')
Example: EnforcedStyle: sprintf
# bad
puts format('%10s', 'hoge')
puts '%10s' % 'hoge'
# good
puts sprintf('%10s', 'hoge')
Example: EnforcedStyle: percent
# bad
puts format('%10s', 'hoge')
puts sprintf('%10s', 'hoge')
# good
puts '%10s' % 'hoge'
Use %i
or %I
for an array of symbols. (https://github.com/bbatsov/ruby-style-guide#percent-i) Open
task default: [:spec, :rubocop, :script]
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This cop can check 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.
Configuration option: MinSize
If set, arrays with fewer elements than this value will not trigger the
cop. For example, a MinSize of
3` will not enforce a style on an array
of 2 or fewer elements.
Example: EnforcedStyle: percent (default)
# good
%i[foo bar baz]
# bad
[:foo, :bar, :baz]
Example: EnforcedStyle: brackets
# good
[:foo, :bar, :baz]
# bad
%i[foo bar baz]
Use 0o for octal literals. (https://github.com/bbatsov/ruby-style-guide#numeric-literal-prefixes) Open
file.chmod(0755)
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- Exclude checks
This cop checks for octal, hex, binary and decimal literals using
uppercase prefixes and corrects them to lowercase prefix
or no prefix (in case of decimals).
eg. for octal use 0o
instead of 0
or 0O
.
Can be configured to use 0
only for octal literals using
EnforcedOctalStyle
=> zero_only