Re: Help me to understand code

"my script"? You perhaps mean someone else's script that you have copied or are trying to understand?

The key to understanding it is that do compiles the contents of file whos name is given in $file into the context of the executing code. That is likely to introduce new variables into the context of the executing code.

The series of if statements check the outcome of the compilation process.

Note that in general this is a very insecure technique for managing configuration. You would be much better to use something like YAML instead.

True laziness is hard work

Comment on Re: Help me to understand code

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Re^2: Help me to understand code by Marshall (Canon) on Jul 13, 2009 at 01:02 UTC
I agree with Grandfather, compiling config statements as Perl executable statements is in general not a good idea. Another idea that I've used before is one of the modules like Config::INI::Reader, there are a number of .ini file type readers and writers. Basically the idea is to make what looks like a very simple DB query to get the value that you want. A typical .INI type file is short and these modules build a memory resident hash. Access is very performant. Sometimes I build a very "thin" layer on top of the CPAN module so I can ask a question like: IsValidCity('Houston'); or whatever.	[reply]

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Re^2: Help me to understand code
by Marshall (Canon) on Jul 13, 2009 at 01:02 UTC

Basically the idea is to make what looks like a very simple DB query to get the value that you want. A typical .INI type file is short and these modules build a memory resident hash. Access is very performant. Sometimes I build a very "thin" layer on top of the CPAN module so I can ask a question like: IsValidCity('Houston'); or whatever.

[reply]