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[ruby/en] add .map($:method) sintax in blocks context

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Claudio Secco 2020-05-02 16:09:41 -03:00
parent a67f4663eb
commit d9ee9ce390
1 changed files with 5 additions and 0 deletions
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@ -327,6 +327,11 @@ puts doubled
puts array puts array
#=> [1,2,3,4,5] #=> [1,2,3,4,5]
# another useful sintax is .map(&:method)
a = ["FOO", "BAR", "BAZ"]
a.map { |s| s.downcase } #=> ["foo", "bar", "baz"]
a.map(&:downcase) #=> ["foo", "bar", "baz"]
# Case construct # Case construct
grade = 'B' grade = 'B'