in reply to Re^2: Binary conditionals
in thread Binary conditionals

Not quite. This gives an error message: 
No such class IN at ./714572.pl line 10, near "open my IN"
syntax error at ./714572.pl line 10, near "my IN,"
Execution of ./714572.pl aborted due to compilation errors.

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moritz's code has it right because he uses a lexical filehandle. He also uses the recommended 3-argument form of open and checks its status: 

open my $in,  '<:raw', 'infile.dat' or die $!;

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Re^4: Binary conditionals
by Andrew Coolman (Hermit) on Sep 30, 2008 at 21:12 UTC
    Look out for the open parameters.
    You should distinguish between IN in file handle context and my $IN as scalar.
    my IN probably won't work while my $IN would.

    Regards,
    s++ą  ł˝ ął. Ş ş şą Żľ ľą˛ş ą ŻĽąş.}++y~-~?-{~/s**$_*ee
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