What'chu doin' Ruby?

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]

I would assume this:

$ ruby -e "a = (0..5).to_a; p a.map do |x| x*2; end"

is being interpreted as this:

$ ruby -e "a = (0..5).to_a; p(a.map); do |x| x*2; end"

Or something like that... (that code doesn't work apparently)

https://github.com/JoshCheek/ruby-kickstart/blob/39e85fe5e5161c3846fbf40077d8cba53f9080fb/session3/notes/13-difference-between-block-syntaxes.rb

@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"