From: Robert Klemme <shortcutter@...>
Date: 2009-03-26T02:23:34+09:00
Subject: Re: delete from array while iterating

2009/3/25 Tarscher <tarscher@gmail.com>:
> I want to delete an element from an array when it matches a condition.
> But I first want to print something to the screen when a amùcth is
> found.
>
> I know a.delete_if but can I somehow add that print to the screen next
> to the condition? If not , is there an alternative way to delete from
> an array while iterating?

What makes you think you cannot print in the block of a delete_if?

irb(main):009:0> a = (1..5).to_a
=> [1, 2, 3, 4, 5]
irb(main):010:0> a.delete_if {|x| printf "Found %4d\n", x; x % 3 == 0}
Found    1
Found    2
Found    3
Found    4
Found    5
=> [1, 2, 4, 5]
irb(main):011:0> a
=> [1, 2, 4, 5]

robert

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