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Re^2: How should I understand scalar(%hash) results?

by TVSET (Chaplain)
on Oct 05, 2004 at 08:47 UTC ( #396521=note: print w/ replies, xml ) Need Help??


in reply to Re: How should I understand scalar(%hash) results?
in thread How should I understand scalar(%hash) results?

Oh, thanks. I guess I missed this bit somehow...


Comment on Re^2: How should I understand scalar(%hash) results?
Re^3: How should I understand scalar(%hash) results?
by thospel (Hermit) on Oct 05, 2004 at 09:08 UTC
    In normal programs the only interesting thing about this is that it's guaranteed to return false for an empty hash and something that's true otherwise. So you can check if a hash is empty or not by simply using the hash name in boolean context (which is a scalar context):
    if (%hash) { ..do something for a filled %hash... } else { ...do something for an empty %hash... }

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