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RE: Creating a string with quotes and delimiters from an Array
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From:
Timothy Johnson
Date:
February 27, 2002 15:11
Subject:
RE: Creating a string with quotes and delimiters from an Array
Message ID:
C0FD5BECE2F0C84EAA97D7300A500D5002580FFF@SMILEY
maybe you can replace =~ /\D/ with "!~ /^[-+]?\d+(.\d+){0,1}$/" *whew*
which means "does not equal:
start with zero or more - or + # ^[-+]?
followed by one or more digits # \d+
followed by zero or one sets of a period followed by one or more digits
at the end of the string # (.\d+){0,1}$
-----Original Message-----
From: Angus Laycock [mailto:angus.laycock@tesco.net]
Sent: Tuesday, February 26, 2002 10:41 AM
To: Tanton Gibbs; beginners@perl.org
Subject: Re: Creating a string with quotes and delimiters from an Array
What about on negative numbers like -1? They come up with quotes, any ideas?
Thanks
Gus
----- Original Message -----
From: Tanton Gibbs <thgibbs@deltafarms.com>
To: Angus Laycock <angus.laycock@tesco.net>; <beginners@perl.org>
Sent: Wednesday, February 27, 2002 10:53 PM
Subject: Re: Creating a string with quotes and delimiters from an Array
> I apologize for not stating it earlier...mea culpa (and if I didn't have
the
> time, I shouldn't post to the beginners list anyway!)
>
> the ? : operator is like an if else statement
> if actually expands to (sort of)
>
> if( /\D/ ) {
> $string .= "'$_',";
> }
> else {
> $string .= "$_,";
> }
>
> The regular expression /\D/ matches anything that is not a digit. Since
we
> do not provide a variable for it to operate on, it chooses the default
> variable $_ which is set by the preceeding foreach loop. The .= is the
> string concatenation operator with assignment...it actually expands to
> $string = $string . "'$_',";
>
> Hope this helps!
> Tanton
> ----- Original Message -----
> From: "Angus Laycock" <angus.laycock@tesco.net>
> To: <beginners@perl.org>
> Sent: Tuesday, February 26, 2002 1:33 PM
> Subject: Re: Creating a string with quotes and delimiters from an Array
>
>
> > I know I now have the result but how does it do it?
> >
> > $string .= /\D/ ? "'$_'," : "$_,";
> >
> > If you have the time.
> >
> > Thanks again
> >
> > Gus
> >
> >
> > ----- Original Message -----
> > From: Tanton Gibbs <thgibbs@deltafarms.com>
> > To: Angus Laycock <angus.laycock@tesco.net>; <beginners@perl.org>
> > Sent: Wednesday, February 27, 2002 10:30 PM
> > Subject: Re: Creating a string with quotes and delimiters from an Array
> >
> >
> > > Your best bet is to do this with a foreach loop
> > >
> > > my $string = '';
> > > my @array = qw( alf bert charlie 4 )
> > > foreach( @array ) {
> > > $string .= /\D/ ? "'$_'," : "$_,";
> > > }
> > > ----- Original Message -----
> > > From: "Angus Laycock" <angus.laycock@tesco.net>
> > > To: <beginners@perl.org>
> > > Sent: Tuesday, February 26, 2002 1:07 PM
> > > Subject: Creating a string with quotes and delimiters from an Array
> > >
> > >
> > > Hi,
> > >
> > > I have an array ----> @array = qw(alf bert charlie 4)
> > >
> > > and I want a string that contains this value <
> 'alf','bert','charlie','4'
> > >
> > > with the single quotes and commas.
> > >
> > > I know I can do this $string = join ( ',' , @array); which gives me
> > > this ----> < one|two|three|four> but how do I get the single quotes
> around
> > > each word.
> > >
> > >
> > > Also, how can I check if one of the values is numeric so I dont put
> quotes
> > > around it? So the result is like this ---> < 'alf','bert','charlie',4
>
> > >
> > > Thanks
> > >
> > >
> > > Gus
> > >
> > >
> > >
> > > --
> > > To unsubscribe, e-mail: beginners-unsubscribe@perl.org
> > > For additional commands, e-mail: beginners-help@perl.org
> > >
> > >
> >
> >
> > --
> > To unsubscribe, e-mail: beginners-unsubscribe@perl.org
> > For additional commands, e-mail: beginners-help@perl.org
> >
>
>
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