How to write block in IRB?

Question

For example, I want to implement this code in IRB, but it has single-line input so I can get how to write block there.

a = [3, 2, 1]
a[3] = a[2] - 1

a.each do |elt|
  print elt+1
end

You obviously haven't tried doing what you're asking. IRB is an interactive Ruby, and yes, it's line-oriented, but it's plenty smart to recognize your input as the beginning of a block. — the Tin Man, Sep 10 '15 at 17:10

score 2 · Accepted Answer · answered Sep 10 '15 at 10:44

(Oh you mean IRB)

If you enter something that will be on multiple lines, ruby will wait until the final end is completed before running the code:

irb(main):001:0> def dostuff
irb(main):002:1>   puts "things"
irb(main):003:1> end
=> :dostuff
irb(main):004:0> dostuff
things
=> nil
irb(main):005:0>

As you can see the number at the prompt changes depending on how deep the block-level is.

How to write block in IRB?

1 Answers1