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Merge pull request #3913 from singjsong/ruby-block-syntax

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[ruby/en] Add Ruby shorthand block syntax examples
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Max Schumacher 2020-07-07 15:26:33 +02:00 committed by GitHub
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@ -430,6 +430,16 @@ def guests(*array)
array.each { |guest| puts guest } array.each { |guest| puts guest }
end end
# There is also the shorthand block syntax. It's most useful when you need
# to call a simple method on all array items.
upcased = ['Watch', 'these', 'words', 'get', 'upcased'].map(&:upcase)
puts upcased
#=> ["WATCH", "THESE", "WORDS", "GET", "UPCASED"]
sum = [1, 2, 3, 4, 5].reduce(&:+)
puts sum
#=> 15
# Destructuring # Destructuring
# Ruby will automatically destructure arrays on assignment to multiple variables. # Ruby will automatically destructure arrays on assignment to multiple variables.