in reply to Re^2: pack() returns an unusable string
in thread pack() returns an unusable string

unpack "H*" hasn't changed, so what you're saying makes no sense. Encode the string in the parent (say using unpack "H*"), then recreate the original in the child if so you desire (using pack "H*").

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Re^4: pack() returns an unusable string
by syphilis (Bishop) on May 30, 2021 at 08:46 UTC
    unpack "H*" hasn't changed, so what you're saying makes no sense.

    Well - you apparently knew that, but I didn't.
    I was fairly certain it would be the case and that it should be the case, but I wanted to verify it with an actual example, and your approach does not provide that verification.
    (Admittedly, it is pretty hard to see how anything else *could* be the case ;-)

    I was also wanting to do the same thing, but replacing "H*" with "D" - in order to verify that rounding would be performed as expected. (It is ... so long as one's expectation is correct.)
    Wrt perl-5.34.0, unlike unpack("H*", $string) we see that the value returned by unpack("D", $string) will often vary between 'double' and 'long double' builds, for the very same $string.
    I don't doubt that you regard running those checks as also being something that "makes no sense".
    But having a "D" template on a perl whose nvtype is 'double' is a little disconcerting to me, and I just want to make sure that its behaviour is clear in my mind.

    Cheers,
    Rob

      I was also wanting to do the same thing, but replacing "H*" with "D"

      That totally misses the point. I suggested using unpack "H*" as a form of serialization. You'd use in the parent and pack "H*" in the child in addition to pack "d" or pack "D" or whatever you want to test.

      Seeking work! You can reach me at ikegami@adaelis.com

        That totally misses the point

        Yes, it totally misses *your* point, just as you are intent on totally missing mine.

        Cheers,
        Rob

      Why would you think that any or all of pack "H*" AND JSON encoders AND base64 encoders AND all the other alternatives I mentioned stopped working?

      Seeking work! You can reach me at ikegami@adaelis.com