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FAQ 4.24 How do I reverse a string?
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FAQ 4.24 How do I reverse a string? PerlFAQ Server 10-11-2008
Posted by PerlFAQ Server on October 11, 2008, 9:03 pm
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This is an excerpt from the latest version perlfaq4.pod, which
comes with the standard Perl distribution. These postings aim to
reduce the number of repeated questions as well as allow the community
to review and update the answers. The latest version of the complete
perlfaq is at http://faq.perl.org .

--------------------------------------------------------------------

4.24: How do I reverse a string?

Use "reverse()" in scalar context, as documented in "reverse" in
perlfunc.

$reversed = reverse $string;



--------------------------------------------------------------------

The perlfaq-workers, a group of volunteers, maintain the perlfaq. They
are not necessarily experts in every domain where Perl might show up,
so please include as much information as possible and relevant in any
corrections. The perlfaq-workers also don't have access to every
operating system or platform, so please include relevant details for
corrections to examples that do not work on particular platforms.
Working code is greatly appreciated.

If you'd like to help maintain the perlfaq, see the details in
perlfaq.pod.

Posted by Jürgen Exner on October 11, 2008, 11:34 pm
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>4.24: How do I reverse a string?
>
> Use "reverse()" in scalar context, as documented in "reverse" in
> perlfunc.
>
> $reversed = reverse $string;


Duuuh, isn't that rather obvious?

Honestly, this may be an SAQ, but IMNSHO it doesn't qualify as
frequently asked. And it is so trivial, I really don't see the point in
repeating the man page in the FAQ. We don't have an entry for "How do I
push an element onto an array?", either.

Therefore I suggest removing it.

jue

Posted by brian d foy on October 12, 2008, 9:58 am
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> >4.24: How do I reverse a string?
> >
> > Use "reverse()" in scalar context, as documented in "reverse" in
> > perlfunc.
> >
> > $reversed = reverse $string;
>
>
> Duuuh, isn't that rather obvious?

It's not been obvious to most people I teach. Most people only see it
as a list operator.

> Therefore I suggest removing it.

It's not hurting anyone where it is.

Posted by Jürgen Exner on October 12, 2008, 12:00 pm
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>> >4.24: How do I reverse a string?
>> > Use "reverse()" in scalar context, as documented in "reverse" in
>> > perlfunc.
>> >
>> > $reversed = reverse $string;
>>
>> Duuuh, isn't that rather obvious?
>
>It's not been obvious to most people I teach. Most people only see it
>as a list operator.
>
>> Therefore I suggest removing it.
>
>It's not hurting anyone where it is.

It is cluttering the FAQ, therefore I suggested removing it /if/ it
doesn't provide any useful information. However apparently there are
indeed people to whom it is useful.

Do others share Brian's experience/sentiment?

jue

Posted by Hans Mulder on October 12, 2008, 2:25 pm
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Jürgen Exner wrote:
>>>> 4.24: How do I reverse a string?
>>>> Use "reverse()" in scalar context, as documented in "reverse" in
>>>> perlfunc.
>>>>
>>>> $reversed = reverse $string;
>>> Duuuh, isn't that rather obvious?
>> It's not been obvious to most people I teach. Most people only see it
>> as a list operator.
>>
>>> Therefore I suggest removing it.
>> It's not hurting anyone where it is.
>
> It is cluttering the FAQ, therefore I suggested removing it /if/ it
> doesn't provide any useful information. However apparently there are
> indeed people to whom it is useful.
>
> Do others share Brian's experience/sentiment?

I seem to remember this question was asked frequently
before it was added to the FAQ.

So I agree with Brian.

-- HansM


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