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Re: two questions

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Chas. Owens
August 5, 2009 04:02
Re: two questions
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On Wed, Aug 5, 2009 at 05:12, Ed Avis<> wrote:
> sys adm <sysadm <at>> writes:
>>1. why perl doesn't have a built-in strip() function?
>>each time I need to say $var =~ s/^\s+|\s+//g to strip
> Good question.  Perl 6 is fixing this by adding a 'trim' operator.
> The code I use is
>    for ($var) { s/\A\s+//; s/\s+\z/ }
>>2. what's the standard module or method to generate a random string, for example
>>the string will be used as part of url.
> If you want to use the string in a URL then it cannot be truly random, because
> not every character can appear in a URL.  Why not just generate a random number
> and use that as the string?

One common method is to generate a random number and then encode that
number in base 16 or 64:

my $randstr = sprintf "%08x", int rand 2**32;

Chas. Owens
The most important skill a programmer can have is the ability to read.

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