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Re^5: Main routines, unit tests, and sugar

by vsespb (Hermit)
on Jun 16, 2013 at 17:22 UTC ( #1039230=note: print w/ replies, xml ) Need Help??


in reply to Re^4: Main routines, unit tests, and sugar
in thread Main routines, unit tests, and sugar

Well, if the application is small enought to fit to one file, your arguments are valid

If application already consists of several files (i.e. it's not a small 500 lines script), the benefits I described outweigh that fact that you need another file

You added the need to chase off and track through where this module file lives -- not always obvious with lib, site/lib, site/vendor/lib

It must be irrelevant if we talk about CPAN deploy. More that that, if user has a mess with @INC dir, it's actually better to have all application files in one @INC dir, than having half of application is @INC and half in bin (/usr/bin, /usr/local/bin/ ~/bin /opt/myapp/bin etc) (if we assume that there is a mess with @INC, we can assume there is a mess with $PATH too)

Having site/lib, site/vendor/lib is actually a feature, so people can deploy with CPAN or with OS package manager at same time, it's an advantage

extra file

Minor issue, if you already have several files

an extra level of callback trace

There won't be extra level of stacktrace if you just split code to files. Extra level added if you split it to subroutines

So it's valid argument if we talk about having some startup code in one "main" subroutine vs having some code unwrapped to subroutine in main package

callback trace to every error message

Imho stacktrace should appear if unexpected/programmer error happened (assertion, like "confess"), otherwise there should be clear error message and no stacktrace is needed. But it's probably matter of script quality


Comment on Re^5: Main routines, unit tests, and sugar
Re^6: Main routines, unit tests, and sugar
by BrowserUk (Pope) on Jun 16, 2013 at 17:44 UTC
    the benefits I described

    You had not -- and still have not -- described any "benefits".

    At best you've outlined your personal preference for adding an extra layer to your applications for no good reason.

    But they are your applications, so do as you will. (Just don't try to feign some CompSci justifiction for it. )


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