sys adm wrote:
1. why perl doesn't have a built-in strip() function?
Why doesn't BASIC have built-in regular expressions? Why doesn't C have
built-in strings? Why doesn't $LANGUAGE have built-in $FEATURE?
Because that is the way the language was designed.
each time I need
to say $var =~ s/^\s+|\s+//g to strip the blank space before and after
the variable, specially if this is a CGI var.
That actually strips *all* whitespace from the variable:
$ perl -le'my $var = " one two three "; print "*$var*"; $var =~
s/^\s+|\s+//g; print "*$var*"'
* one two three *
*onetwothree*
According to the FAQ you want to do it like this:
s/^\s+//, s/\s+$// for $var;
2. what's the standard module or method to generate a random string,
for example the string will be used as part of url.
AFAIK there is no standard module but you could do something like this:
my @chars = ( 'a' .. 'z', 'A' .. 'Z', 0 .. 9 );
my $string_length = 30;
my $random_string = join '', map $chars[ rand @chars ], 1 .. $string_length;
John
--
Those people who think they know everything are a great
annoyance to those of us who do. -- Isaac Asimov
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