From c6804101b9f60c9083f88b24a1dfa5b91443fc94 Mon Sep 17 00:00:00 2001 From: Jake Haber Date: Tue, 21 Apr 2020 07:33:51 -0500 Subject: Add Ruby shorthand block syntax examples --- ruby.html.markdown | 10 ++++++++++ 1 file changed, 10 insertions(+) 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. -- cgit v1.2.3