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 =
> "sa" == sys adm writes:
sa> 1. why perl doesn't have a built-in strip() function? each time I
sa> need to say $var =~ s/^\s+|\s+//g to strip the blank space before
sa> and after the variable, specially if this is a CGI var.
because it is so easy to write a strip thing with regexes. a
1. why perl doesn't have a built-in strip() function? 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.
2. what's the standard module or method to generate a random string, for
example the string will be used as
On Tue, Aug 4, 2009 at 23:07, Dave Tang wrote:
> On Wed, 05 Aug 2009 12:55:22 +1000, Chas. Owens
> wrote:
>
> snip
>>
>> In this case it is telling Perl that compare expects two scalars as
>> arguments.
>
> snip
>
> Now the compare($$) makes much more sense.
>
> snip
>>
>> There are many [pitfalls
On Wed, 05 Aug 2009 12:55:22 +1000, Chas. Owens
wrote:
snip
In this case it is telling Perl that compare expects two scalars as
arguments.
snip
Now the compare($$) makes much more sense.
snip
There are many [pitfalls][2] to prototypes and they should really not be
used unless you have a
On Tue, Aug 4, 2009 at 19:30, Dave Tang wrote:
snip
> sub compare($$) {
snip
> running this script, but just wanted to know its purpose in compare($$).
snip
Those are [prototypes][1]. They change how Perl thinks about the
function call. In this case it is telling Perl that compare
Dave Tang wrote:
Hi everybody,
Hello,
I was reading perlfaq7.pod, 7.15: How can I pass/return a {Function,
FileHandle, Array, Hash, Method, Regex}?
In one of the examples it shows how regular expressions can be passed to
subroutines:
sub compare($$) {
Hi everybody,
I was reading perlfaq7.pod, 7.15: How can I pass/return a {Function,
FileHandle, Array, Hash, Method, Regex}?
In one of the examples it shows how regular expressions can be passed to
subroutines:
sub compare($$) {
my ($val1, $regex) = @_;
Big thanks for replying. Just modified my mktime() call :
POSIX::mktime(sec, min, hour, month, year, -1, -1, 1);
and now it work as expected :)
On Mon, Aug 03, 2009 at 08:42:43AM -0400, Shawn H. Corey wrote:
> Roman Makurin wrote:
>> Could someone explain me whats goin on :)
>>
>
> Do you have D
Ed Avis wrote:
Shawn H. Corey gmail.com> writes:
Why on earth would you want to invert an XML file?
What I mean is that many modules (such as XML::Twig) return data as hashes.
To me, it doesn't make any sense to return both a hash and its inverse from
the function. Instead I would return jus
Shawn H. Corey gmail.com> writes:
>>>But then again I never have to invert a hash; when I populate it, I
>>>would populate its inverse as well.
>>But in the particular case I was thinking of,
>>there was some (programmer-maintained, not user-maintained) configuration data
>>in a hash:
>>
>>
Ed Avis wrote:
Shawn H. Corey gmail.com> writes:
But then again I never have to invert a hash; when I populate it, I
would populate its inverse as well. I would build both data structures
at the same time, inserting only the data I need, where I need it.
That's often a good approach. But
When you have some scripts ready, could you share them? Are you doing
this for a blog?
Best regards,
In article <1233387242.4218.32.ca...@ar2.protva-net>,
dro...@gmail.com (Roman Makurin) wrote:
> РСбÑ, 31/01/2009 в 09:05 +0200, Erez Schatz пиÑеÑ:
> > On 1/31/2009 8:45 AM, Roman Mak
Uri Guttman stemsystems.com> writes:
> EA> foreach my $k (sort keys %hash) {
>
>why the sort?
No terribly good reason; I just wanted the error messages to be deterministic.
You could speed it up a bit by not sorting and it would still work just as well,
but the error message given might in
Shawn H. Corey gmail.com> writes:
>But then again I never have to invert a hash; when I populate it, I
>would populate its inverse as well. I would build both data structures
>at the same time, inserting only the data I need, where I need it.
That's often a good approach. But in the particul
Jenda Krynicky Krynicky.cz> writes:
>
[inverting a hash but checking that no data is lost]
>>To give a really useful error message is a bit more code:
>>
>>my %reverse;
>>foreach my $k (sort keys %hash) {
>>my $v = $hash{$k};
>>if (exists $reverse{$k}) {
>>die
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