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Re^3: using sed buffers

by ww (Archbishop)
on May 02, 2012 at 21:48 UTC ( #968560=note: print w/replies, xml ) Need Help??

in reply to Re^2: using sed buffers
in thread using sed buffers

Actually, the point is that sed isn't a Perl function.

What's discouraged (much of the time) is shelling out to a (legacy) OS-function because doing so is often more costly than using the Perl equivalent/variant.

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Re^4: using sed buffers
by JavaFan (Canon) on May 02, 2012 at 22:46 UTC
    What's discouraged (much of the time)
    Only by some people
    is often more costly than using the Perl equivalent/variant.
    So what? In many cases, it doesn't matter.

    Note also he's using sed to strip off some of the output of ps. I'm sure someone made a module somewhere that mimics all the flavours of ps, but I rather spend a few microseconds forking and execing a 'ps', then I go hunting down said module, download and install it, and learn how it works.

    There can be all kinds of reasons one does something in Perl instead of shelling out. But being considered "discouraged" by some doesn't strike me as an important reason.

    But that may be just me.

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