Strange array test in ruby

Question

I have noticed strange behavior. While this one runs as expected:

@a = ['0','1','2','3','4','5']
def test2
  @a[0..2].each do |i|
    puts 'I am at: ' +i.to_s
    if i == '2'
      puts 'I am removing 2'
      @a.delete(i)
      licz
    end
  end
end


I am at: 0
I am at: 1
I am at: 2
I am removing 2
I am at: 0
I am at: 1
I am at: 3

Somehow, this code, 'remembers' old array and tries to finish previous 'if' statement:

@a = ['0','1','2','3','4','5']
def test1
  @a.each do |i|
    puts 'I am at: ' +i.to_s
    if i == '2'
      puts 'I am removing 2'
      @a.delete(i)
      test1
    end
  end
end
    I am at: 0
    I am at: 1
    I am at: 2
    I am removing 2
    I am at: 0
    I am at: 1
    I am at: 3
    I am at: 4
    I am at: 5
    I am at: 4
    I am at: 5
    => ["0", "1", "3", "4", "5"]

Why does it repeat 4 5, 4 5 ?

I am aware that in second test, I run each on each element, but why it tries to finish old statement?

just noticed that. lol, to much of coding for the weekend ;) — meso_2600
– meso_2600, Commented May 13, 2012 at 15:50

David Grayson · Accepted Answer · 2012-05-13 15:52:38Z

3

Because you call the same function (test1) twice.

edited May 13, 2012 at 15:52

David Grayson

88.1k24 gold badges159 silver badges195 bronze badges

answered May 13, 2012 at 15:49

Tiago Peczenyj

4,6712 gold badges24 silver badges36 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

Strange array test in ruby

1 Answer 1

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Related