On Jun 12, 12:15 am, [EMAIL PROTECTED] (Beast) wrote:
> Why this following code has not working as expected?
>
> print "Number of element(s) : " . sprintf("%10d", keys(%hash) ) . "\n";
The keys() function does two different things, depending on context.
In scalar context, it returns the number of key/value pairs in the
hash.
In list context, it returns a list of the keys.
You probably knew that, but didn't realize that you're using it in a
list context here. The arguments to a function are a list, and so
Perl is expecting a list of values to be passed to sprintf().
Anywhere Perl expects a list, if it sees a function/subroutine, it
calls that function/subroutine in list context.
Paul Lalli
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