Re: Re: Idiomatic Array Index Search?

Terrific write-up tachyon. Just one small (though crucial) quibble about the difference between '$#array' and 'scalar @array':

my @array = qw(a b c d e f);
for (0..$#array) {print $_}  # zero thru last index
for (0..@array)  {print $_}  # zero thru size of array
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prints: '0123450123456'

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Re: Re: Re: Idiomatic Array Index Search? by tachyon (Chancellor) on May 27, 2001 at 09:28 UTC
Ah... good point. Perls auto vivification has obviously let me silently access one element past the end of the real array in that example. I normally use $#array but recently had to use @_ as $#_ was causing a syntax error (it was wickedly twisted code). I had thus far failed to note the difference. Thanks very much. I have added a correction to previous post with appropriate credit of course. On more pearl of wisdom duly filed tachyon	[reply]

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Re: Re: Re: Idiomatic Array Index Search?
by tachyon (Chancellor) on May 27, 2001 at 09:28 UTC

Ah... good point. Perls auto vivification has obviously let me silently access one element past the end of the real array in that example. I normally use $#array but recently had to use @_ as $#_ was causing a syntax error (it was wickedly twisted code). I had thus far *failed* to note the difference.

Thanks very much. I have added a correction to previous post with appropriate credit of course.

On more pearl of wisdom duly filed

tachyon

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