in reply to Re: sysopen vs. open
in thread sysopen vs. open

Interestingly, none of those talk about the return values for sysopen. I'm going to guess that a falsey value is a fail.

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Re^3: sysopen vs. open
by soonix (Chancellor) on Apr 17, 2020 at 06:32 UTC
    obviously, rou read different documentation than I. All three (open, sysopen and perlopentut) explicitly say that undef is returned on failure, which is, as you 'guessed', a falsey value.

    Edit: added the words in italics

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