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Re: two questions

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Chas. Owens
August 5, 2009 11:06
Re: two questions
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On Wed, Aug 5, 2009 at 11:06, John W. Krahn<> wrote:
> Chas. Owens wrote:
>> On Wed, Aug 5, 2009 at 10:01, John W. Krahn<> wrote:
>> snip
>>>> 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.
>>> That does not make sense.
>> snip
>> I believe he/she meant that not every character is allowed in a regex,
> But... every character *is* allowed in a regex.

Whoops typo, that should have been URL not regex.

>> so you can't just generate a random string made up of any characters.
>> You must use a restricted character set.
> Yes, but, you can use any number of encoding schemes to translate "any
> character" to an "unrestricted character".

Yes, but why bother for a random string?  Just create one that has the
right number of characters of the restricted set:

my $random = join '', map { $set[rand @set] } 1 .. 20;

or use a random number in base 16 or 64.

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

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