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mikelikesbikes/gist:8809504

Last active August 29, 2015 13:56
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What'chu doin' Ruby?
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gistfile1.txt
$ ruby -e "a = (0..5).to_a; c = a.map do |x| x*2; end; p c.class"
Array
$ ruby -e "a = (0..5).to_a; c = a.map { |x| x*2; }; p c.class"
Array
$ ruby -e "a = (0..5).to_a; p a.map do |x| x*2; end"
#<Enumerator: [0, 1, 2, 3, 4, 5]:map>
$ ruby -e "a = (0..5).to_a; p a.map { |x| x*2; }"
[0, 2, 4, 6, 8, 10]
@JoshCheek
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https://github.com/JoshCheek/ruby-kickstart/blob/39e85fe5e5161c3846fbf40077d8cba53f9080fb/session3/notes/13-difference-between-block-syntaxes.rb

@mikelikesbikes
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@JoshCheek THANKS!

@ryanbriones see Josh's example... it's being interpreted like this:
$ ruby -e "a = (0..5).to_a; p(a.map) do |x| x*2; end"

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