Beau E. Cox wrote:
> Hi -
>
> I want to determine is a variable is a file handle.
>
> How would I do this?
>
> I know how to tell if it is a ref to something,
> but I can't seem to be able to find out if it
> is a file handle.
>
> Aloha => Beau/
UNIVERSAL::isa($var, 'GLOB') should do the trick. This works for IO::File
and similar objects as well as those created by open(my $fh, ...).
If you want to see if a file is actually open on that handle, you can do
something like:
UNIVERSAL::isa($var, 'GLOB') && eval { $var->opened }
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