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Re^2: override CORE sub and keep method in same package

by bulk88 (Priest)
on Oct 14, 2013 at 23:35 UTC ( #1058218=note: print w/ replies, xml ) Need Help??


in reply to Re: override CORE sub and keep method in same package
in thread override CORE sub and keep method in same package

Yes. "CORE::GLOBAL::" is too aggressive. It is process wide supposedly.


Comment on Re^2: override CORE sub and keep method in same package
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Re^3: override CORE sub and keep method in same package (Updated)
by BrowserUk (Pope) on Oct 15, 2013 at 02:20 UTC

    Update: I assuming from your typically terse description that you goal is to override the function of the built-in select only within the IO::Select module without overriding the select method it presents to its callers.

    If that is not the case, perhaps you could clarify your requirements?

    Yes. "CORE::GLOBAL::" is too aggressive.

    Hm. The CORE::GLOBAL discussion is only a one part of the discussion referenced.

    There is also use REGlob 'glob';            # override glob() in Foo:: only, amongst others.

    But, to answer your specific problem, I'd suggest adding:

    sub yourSelect { ... } sub select { local *CORE::GLOBAL::select = *yourSelect; shift if defined $_[0] && !ref($_[0]); my($r,$w,$e,$t) = @_; my @result = (); my $rb = defined $r ? $r->[VEC_BITS] : undef; my $wb = defined $w ? $w->[VEC_BITS] : undef; my $eb = defined $e ? $e->[VEC_BITS] : undef; if(select($rb,$wb,$eb,$t) > 0) ################################################ }

    Wherever select is used in IO::Select. Make it conditional if appropriate.


    With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'
    Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
    "Science is about questioning the status quo. Questioning authority".
    In the absence of evidence, opinion is indistinguishable from prejudice.
      You guessed right. Unfortunately I have to change something in the existing method subs, for all the solutions presented here. So I might as well just replace all calls to builtin select in each method with a select2 I defined. Checking if the first arg is blessed is another solution which probably would have been cleaner then putting select2 everywhere.
        So I might as well just replace all calls to builtin select in each method with a select2 I defined.

        Yes. That is much simpler isn't it :)


        With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'
        Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
        "Science is about questioning the status quo. Questioning authority".
        In the absence of evidence, opinion is indistinguishable from prejudice.

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