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Re: while( each ... ) caught in an infinite loop

by BrowserUk (Patriarch)
on Mar 31, 2009 at 10:44 UTC ( [id://754382]=note: print w/replies, xml ) Need Help??


in reply to while( each ... ) caught in an infinite loop

You are calling the subroutine again each time the while loop iterates, which means you are constructing and returning a new anonymous hash for each iteration. As the hashref returned is to a newly construct hash, its iterator starts from the beginning each time.

Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
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Re^2: while( each ... ) caught in an infinite loop
by jettero (Monsignor) on Mar 31, 2009 at 10:47 UTC

    Which, I believe can be constructed from a much smaller example: 

    while( my @a = each %{{ a=>'b' }} ) { print "forever\n" }

    [download]
    .

    -Paul

[reply]
[d/l]
Re^2: while( each ... ) caught in an infinite loop
by johngg (Canon) on Mar 31, 2009 at 12:37 UTC

    Thank you. The "small bugette" is in my brain, obviously. I wonder how it is that I can spend hours on a problem and dismally fail to spot the obvious :-(

    Thanks again.

    JohnGG

[reply]
[d/l]
      It's not at all intuative. I may never have noticed this myself if it wasn't for reading about it in DBM::Deep.

      -Paul

[reply]

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