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| -rw-r--r-- | ruby.html.markdown | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/ruby.html.markdown b/ruby.html.markdown index 376f4a47..d21c727f 100644 --- a/ruby.html.markdown +++ b/ruby.html.markdown @@ -430,6 +430,16 @@ def guests(*array) array.each { |guest| puts guest } 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 # Ruby will automatically destructure arrays on assignment to multiple variables. |