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Re: open file does not work for externally defined filename

by rafl (Friar)
on Jan 07, 2008 at 20:26 UTC ( #660931=note: print w/replies, xml ) Need Help??


in reply to open file does not work for externally defined filename

When a call to open() fails it returns undef and sets the special variable $!, which will allow you to find out what exactly is going wrong.

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choroba's discovered two instances of a weird animal in the code at work: \@$var
[Eily]: hum, tied scalar, generates a new array when derefed ? :D
[Corion]: choroba: Ah, when doing a shallow copy, I prefer [ @$var ] - I think \@$var might return the same reference instead of a reference to a fresh copy
[Corion]: perl -wle "my $ar = [1,2,3]; my $br=\@$ar; print qq($ar / $br)" confirms this to me

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