How to use select

agynr has asked for the wisdom of the Perl Monks concerning the following question:

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Re: How to use select by Zaxo (Archbishop) on Mar 05, 2005 at 07:32 UTC
You probably want one of the two builtin selects. The one-argument form sets the default output file. The four-argument form awaits I/O availability. The latter is nicely wrapped in IO::Select. The POSIX module comes with perl, but it has no select function. What are you trying to do? After Compline, Zaxo	[reply]
Re: How to use select by Corion (Patriarch) on Mar 05, 2005 at 07:35 UTC
At least http://search.cpan.org does not know of a package called POSIX::SELECT. Where did you find the name of that package? If you can't find a precompiled package, you will have to compile it yourself. Most likely, guessing from its name, POSIX::Select tries to provide POSIX semantics for `select`, but on Win32, `select` does not work for filehandles, only for sockets. Maybe the module caters for Win32 separately, but I would doubt that from its name. So, if you don't find POSIX::Select, maybe you can tell us what problem you want to solve, so we can recommend alternatives?	[reply]
Re^2: How to use select by agynr (Acolyte) on Mar 05, 2005 at 10:00 UTC
What I want is to use select statement as in other languages like C or C++ ..... I want to select from a no. of choices. Please let me know if it is possible or not . If it is possible then what is the ppd file to use.	[reply]
Re^3: How to use select by virtualsue (Vicar) on Mar 05, 2005 at 13:38 UTC
Perhaps you are looking for Shell::POSIX::Select?	[reply]
Re^3: How to use select by ZlR (Chaplain) on Mar 05, 2005 at 10:21 UTC
Ah, then what you want is a switch like statement . There's a module : switch . Or you can do it in a great number of various ways, the most common one is using a named block with last: `SWITCH: { if (expression) { statement(s); last SWITCH; } if (expression) { statement(s); last SWITCH; } default statement(s); }` [download] update : don't try to be funky by using that switch module :) just use the if / last style ! See the answers by corion , holli and virtualsue !!	[reply] [d/l]
Re^4: How to use select (Switch.pm considered harmfull) by Corion (Patriarch) on Mar 05, 2005 at 13:12 UTC
Re^4: How to use select by holli (Abbot) on Mar 05, 2005 at 13:21 UTC
Re^4: How to use select by virtualsue (Vicar) on Mar 05, 2005 at 13:35 UTC
Re: How to use select by tphyahoo (Vicar) on Mar 05, 2005 at 13:07 UTC
Another way to do it using last. `for ($animal) { /camel/ and do Humps(2), last; /dromedary/ and do Humps(1), last; }` [download] from "perl idioms" web page. Don't have the url but just google on my code.	[reply] [d/l]


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