Prefer Symbol over Proc Has Fix
Description
Ruby has a more concise symbol shorthand &: to invoke methods. This rule simplifies proc to symbol. This example is inspired by this dev.to article.
YAML
yaml
id: prefer-symbol-over-proc
language: ruby
rule:
pattern: $LIST.$ITER { |$V| $V.$METHOD }
constraints:
ITER:
regex: 'map|select|each'
fix: '$LIST.$ITER(&:$METHOD)'Example
rb
[1, 2, 3].select { |v| v.even? }
(1..100).each { |i| i.to_s }
not_list.no_match { |v| v.even? }Diff
rb
[1, 2, 3].select { |v| v.even? }
[1, 2, 3].select(&:even?)
(1..100).each { |i| i.to_s }
(1..100).each(&:to_s)
not_list.no_match { |v| v.even? }