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Re^2: Unpack Bin file problem

by mark4444az (Sexton)
on Mar 01, 2013 at 22:36 UTC ( #1021353=note: print w/replies, xml ) Need Help??

in reply to Re: Unpack Bin file problem
in thread Unpack Bin file problem

OK, That worked. Your comment, "It sets the special variable to undef", is not yet clear to me. I will have to research this. I greatly appreciate you help. I understand the concept of $_, just not how local $/ modifies it.

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Re^3: Unpack Bin file problem
by bart (Canon) on Mar 01, 2013 at 23:37 UTC
    It doesn't modify the behavior of $_, but of <INFILE> (for any handle).

    Perl has a bunch of special variables that change the behavior of perl. $/ Is one of them, it changes what string readline, and thus <INFILE>, searches for as a line terminator, to read a whole line at once. When undef, it'll just make it slurp in the rest of the file.

Re^3: Unpack Bin file problem
by mark4444az (Sexton) on Mar 04, 2013 at 15:58 UTC
    OK, that makes sense now. Thanks again.

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[Corion]: We-ird - I hadn't known this, but Ingress and Pokemon Go (both AR games in the real world where you run around) switched from using Google Maps to OpenStreetMaps, which is great. But I wonder why, as Ingress is (was?) owned by Google/Alphabet. But ...
[Corion]: ... maybe not wholly owned, or the load on Google Maps was too high?!

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