Re: Re: parent wants to capture output from a spawned child


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Re: Re: parent wants to capture output from a spawned child

by perlknight (Pilgrim)

on Nov 26, 2001 at 01:04 UTC ( [id://127422]=note: print w/replies, xml )

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in reply to Re: parent wants to capture output from a spawned child
in thread parent wants to capture output from a spawned child

Thanks for the help, I ended up using "open" instead of "pipe" because pipe was slower (not sure if I am doing something wrong with it). Quick follow up question? I notice "push @msgs, <$_> for values %kids" deference the filehandle where as something like: " for (values %kids) { print "<$_>\n"; }" returns a ref. Is my assumption correct?

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Re: Re: Re: parent wants to capture output from a spawned child
by Zaxo (Archbishop) on Nov 26, 2001 at 02:02 UTC

Nearly right. In push @msgs, <$_> for values %kids; the diamond operator is evaluated in list context, giving you all messages. In print "<$_>\n"; the diamond is not evaluated inside double quotes. Instead, you get literal '<' followed by the interpolated $_, then literal '>'. $_ is a filehandle, a stringified ref to a typeglob is printed. You can do what I think you want with print "@{[<$_>]}\n"; or just print <$_>;

After Compline,
Zaxo

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