You may not understand, and that's fine: but I do. I like it because it works and because it's flexible. It gets the job done.
There are arguments to functions: they're simply declared within the body. Also, function signatures are an experimental feature added in the last few Perl releases that do more in line with what you want. I don't care either way which of these anyone uses; I prefer the standard Perl way for my own reasons.
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You may not understand, and that's fine: but I do. I like it because it works and because it's flexible. It gets the job done.
There are arguments to functions: they're simply declared within the body. Also, function signatures are an experimental feature added in the last few Perl releases that do more in line with what you want. I don't care either way which of these anyone uses; I prefer the standard Perl way for my own reasons.