Also, has anyone ever written a program (in any language, but particularly Perl) that used more than 4000 classes, or a million instances* of a given class?

yes, just now, just so I could say I did.

>perl -le "push(@a, bless({}, sprintf('MyClass%04d',$i++)))
   foreach (1..4001); print(scalar(@a));"
4001

>perl -le "push(@a, bless({}, 'MyClass'))
   foreach (1..1000001); print(scalar(@a));"
1000001

[download]

Check the two snippets called "Symtab Exploration" in ikegami's scratchpad for code looking at the symbol table. Combine that code with *name{TYPE} to look for things other than package names.

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

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