question on inverting text -> txet
 

Hello Group

I was wondering in anyone knew of or could generate a script that
takes an input file which consists of one long line of charachters,
and would output the file inverted (backwards)

i.e. input file looks like: opkiltyo
output file looks like: oytlikpo


Thanks alot in advance for any help offered.

Re: question on inverting text -> txet
 

arctan wrote:
> I was wondering in anyone knew of or could generate a script that
> takes an input file which consists of one long line of charachters,
> and would output the file inverted (backwards)
>
> i.e. input file looks like: opkiltyo
> output file looks like: oytlikpo

A hint:

print scalar reverse split //, 'opkiltyo';

--
Gunnar Hjalmarsson
Email: http://www.gunnar.cc/cgi-bin/contact.pl

Re: question on inverting text -> txet
 

Gunnar Hjalmarsson <noreply@gunnar.cc> wrote:
> arctan wrote:
> > i.e. input file looks like: opkiltyo
> > output file looks like: oytlikpo
>
> A hint:
>
> print scalar reverse split //, 'opkiltyo';

Kind of a confusing hint... :-)

# in scalar context: reverses a string
print scalar reverse 'opkiltyo';

# in list context: reverses a list
print reverse split //, 'opkiltyo';

Not that your code doesn't work -- just that it works for an odd
reason. After you split() the characters, reverse() concatentated
them back together and treated them like a scalar.

--
Steve

Re: question on inverting text -> txet
 

Steve Grazzini wrote:
> Gunnar Hjalmarsson <noreply@gunnar.cc> wrote:
>>arctan wrote:
>>
>>>i.e. input file looks like: opkiltyo
>>> output file looks like: oytlikpo
>>
>>A hint:
>>
>> print scalar reverse split //, 'opkiltyo';
>
> Kind of a confusing hint... :-)
>
> # in scalar context: reverses a string
> print scalar reverse 'opkiltyo';
>
> # in list context: reverses a list
> print reverse split //, 'opkiltyo';
>
> Not that your code doesn't work -- just that it works for an odd
> reason. After you split() the characters, reverse() concatentated
> them back together and treated them like a scalar.

Hmm.. I think I misread the docs. Thanks for pointing it out.

--
Gunnar Hjalmarsson
Email: http://www.gunnar.cc/cgi-bin/contact.pl

Re: question on inverting text -> txet
 

perl -lpe '$_ = reverse'

Re: question on inverting text -> txet
 

Oh, and this newsgroup doesn't exist. Please use comp.lang.perl.misc instead.

Re: question on inverting text -> txet
 

rjohnson@shell.com (Roy Johnson) wrote in message news:<3ee08638.0310150602.162c82ab@posting.google. com>...
> Oh, and this newsgroup doesn't exist. Please use comp.lang.perl.misc instead.

Thanks alot to the members of this nonexistant group :) That was a
big help. Ill post furthur questions to the suggested perl group.