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If unexpected changes are occurring to it, you will want to find where it is being changed. You will have little choice but to step through the code line by line in the debugger to find the offending code. This can be tedious.

...

And the really great thing with this approach is that if you have some errant code that is setting $var to some wacky value, or incrementing it when you don't expect it, all you have to do is to hang a breakpoint off the name of the sub in the debugger, and then just let it run at full clip until the routine gets called. Much less tedious.

By tie()ing the global variable you can add the same functionality and get the same benefit that of a subroutine wrapper in your examples. Then you even get compile-time spelling checks. ;-)

ihb

Read argumentation in its context!


In reply to Re^2: Global variable vs passing variable from sub to sub by ihb
in thread Global variable vs passing variable from sub to sub by kiat

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    [shmem]: you get a file named tags where all symbols and the places where they are used are listed
    [Lady_Aleena]: geany may not support that.
    [shmem]: I see that there is a plugin geany-plugin- codenav
    [shmem]: maybe that supports ctags, check the documentation
    [Lady_Aleena]: I'd have to talk to a geany person to see.
    [Lady_Aleena]: Right now, I'm trying to decide whether I want to rewrite how variables are entered in the sub I'm working on.
    [shmem]: wait, what? you want that person to read the documentation for you?
    [Lady_Aleena]: I might have to go with options instead of a straight list.
    [Discipulus]: if more than 3 go for named variables LA

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