Re: problem with repeating function

In perl OOP, a constructor generally blesses a newly created object, so the object "knows" in which package it lives. Read bless

The error message you got

Undefined subroutine &hc_url::call_httpd_exec called at /exlibris/meta
+lib/m4_b/d
+at01/vir_ext/hc_url.pm line 166.
[download]

tells you that the routine call_httpd_exec was looked up in package hc_url, which is not what you expected - not in package demo nor in package demo2.

Read perltoot.

--shmem

_($_=" "x(1<<5)."?\n".q·/)Oo.  G°\        /
                              /\_¯/(q    /
----------------------------  \__(m.====·.(_("always off the crowd"))."·
");sub _{s./.($e="'Itrs `mnsgdq Gdbj O`qkdq")=~y/"-y/#-z/;$e.e && print}

Comment on Re: problem with repeating function Select or Download Code

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Re^2: problem with repeating function by mrguy123 (Hermit) on Sep 04, 2006 at 11:37 UTC
The error message: `Undefined subroutine &hc_url::call_httpd_exec called at /exlibris/meta +lib/m4_b/d +at01/vir_ext/hc_url.pm line 166.` [download] is for my real program. The error code for my demo programs is : `Undefined subroutine &wrapper::call_httpd_exec called at demo.pm line +8.` [download] `hc_url` isn't used. Does this change your answer?	[reply] [d/l] [select]
Re^3: problem with repeating function by shmem (Chancellor) on Sep 04, 2006 at 12:21 UTC
Yes, the part w/regard to the error message changes. You do a `require "wrapper"` in package demo and in package demo2. demo2 is used by demo. The use means, that demo2 is compiled and executed before demo is even compiled to end. The docs for require state, that `require` doesn't include a file twice. So, `wrapper` is already loaded via demo2, so it lives in demo2. The `require` in demo just returns 1, no file is loaded. You'll see that your code works if you change `call_httpd_exec` in demo to `demo2::call_httpd_exec`. <update> OTOH, if you wrap `require "wrapper"` in demo into a `BEGIN` block and place it before `use demo2`, then the call to `call_httpd_exec` will fail in demo2, since it now lives in demo. Read require, use, again perltoot, perlmod, there BEGIN , CHECK, INIT and END... there are also modules which implement automatic exportation of functions, e.g. Spiffy. </update> --shmem _($_=" "x(1<<5)."?\n".q·/)Oo. G°\ / /\_Ż/(q / ---------------------------- \__(m.====·.(_("always off the crowd"))."· ");sub _{s./.($e="'Itrs `mnsgdq Gdbj O`qkdq")=~y/"-y/#-z/;$e.e && print}	[reply] [d/l] [select]
Re^4: problem with repeating function by mrguy123 (Hermit) on Sep 04, 2006 at 12:47 UTC
Thanks a lot, your answer was very helpful, and it solved my problem until I figure out a better way to use this function (I might change it to a mudule). Cheers, Guy Naamati	[reply]