Flemming Greve Skovengaard wrote:
>
> John W. Krahn wrote:
>>
>> Flemming Greve Skovengaard wrote:
>>>
>>> $rand_string .= $letters[$index];
>>
>> Or simply:
>>
>> $rand_string .= $letters[ rand @letters ];
>
> Yes, that would save a line of code, a variable and a call to scalar().
> But shouldn't that be:
>
> $rand_string .= $letters[ int rand @letters ];
>
> instead?
The array index can only be an integer, in other words $letters[ 4.41792527 ]
makes no sense so perl converts the value of the index to an integer so the
use of int() is redundant.
$ perl -le'
my @x = 0 .. 29;
for ( map rand( @x ), 1 .. 20 ) {
print "Index: $_ Element: $x[$_]"
}
'
Index: 16.1372656909499 Element: 16
Index: 10.402236874601 Element: 10
Index: 4.93827622731633 Element: 4
Index: 27.3864972245868 Element: 27
Index: 21.1438057726559 Element: 21
Index: 7.22816484936587 Element: 7
Index: 22.9971373378341 Element: 22
Index: 29.53992680071 Element: 29
Index: 15.1167304904378 Element: 15
Index: 25.5722310830811 Element: 25
Index: 13.2102360627812 Element: 13
Index: 13.9166707961743 Element: 13
Index: 10.0541861527287 Element: 10
Index: 4.68597889657119 Element: 4
Index: 14.1321285416915 Element: 14
Index: 11.4443306977078 Element: 11
Index: 27.0749844462484 Element: 27
Index: 6.42358929265441 Element: 6
Index: 6.55100443825493 Element: 6
Index: 0.438573083256628 Element: 0
John
--
Perl isn't a toolbox, but a small machine shop where you can special-order
certain sorts of tools at low cost and in short order. -- Larry Wall
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