Foo{THING} notation is convenient for this, 

my $glob = 'FOO';
if (defined do {
    no strict 'vars';
    *$glob{IO}}) {
    # ...
}

[download]
or if you can hardcode the name of the glob, 
if (defined *FOO{IO}) {
    # ...
}

[download]
The foo{THING} is actually an IO::Handle object, a reference, so you can get by with 
if (*FOO{IO}) {
    # ...
}

[download]

After Compline,
Zaxo

In reply to Re: exists *{$glob} ? (+) by Zaxo
in thread exists *{$glob} ? (+) by BrowserUk

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