Re: where main::read_file_cache being initialized?

[Jamie C. <jca...@we...>]

You don't have to declare variables - any that are used without being 
declared are considered by Perl to be global (to the main package, 
which is used by default when no package is explicitly specified).

  - Jamie

Wai Iu wrote:
> Jamie:
> 
> Thanks for your reply. I have another question regarding
> main::read_file_cache.
> 
> In order to use a reference, you must to declared it
> at first, for example, my $ref; $ref=7; . But in the method
> read_file_cached, main::read_file_cache seems to be just being
> used and never being declared at first. And read_file_cache's
> package is main. Where is this main package located?
> 
> Same thing happening to the other references: main:acl_hash_cache,
> main::acl_array_cache, main::has_command_cache, main::list_languages_
> cache.
> 
> Thanks again!
> 
> 
> Wai
> 
> 	-----Original Message----- 
> 	From: Jamie Cameron [mailto:jca...@we...] 
> 	Sent: Mon 1/6/2003 5:36 PM 
> 	To: web...@li... 
> 	Cc: 
> 	Subject: Re: where main::read_file_cache being initialized?
> 	
> 	
> 
> 	Wai Iu wrote:> Hey;
> 	> 
> 	> In the file web-lib.pl, there are following paramaters used,
> 	> such as in flush_webmin_caches() method and in init_config()
> 	> method:
> 	> 
> 	> %main::read_file_cache
> 	> %main::acl_hash_cache
> 	> %main::acl_array_cache
> 	> %main::has_command_cache
> 	> @main::list_languages_cache
> 	> 
> 	> 
> 	> I checked the web-lib.pl and did not find any place that they are> being initialized. Where do these parameters come from?
> 	
> 	Various places :
> 	
> 	read_file_cache - Set by the read_file_cached function, so that
> 	multiple calls for the same file do not have to actually read it.
> 	
> 	acl_hash_cache and acl_array_cache - Set by read_acl so that
> 	/etc/webmin/webmin.acl only has to be read once.
> 	
> 	has_command_cache - Set by has_command, so that multiple calls for the
> 	same command do not have to check the PATH each time.
> 	
> 	list_languages_cache - Set by list_languages so that lang_list.txt
> 	only has to be read once.
> 	
> 	  - Jamie