in reply to Re: a prime bug
in thread a prime bug

I suppose, if you want to be formal about it.
iirc, __END__ and __DATA__ are equivalent, and that's why the script runs. Please correct me if you know otherwise.

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Re^3: a prime bug
by shmem (Chancellor) on Jun 11, 2017 at 12:07 UTC

    Running a script - perl - the tokens make no difference. But if you invoke perl on the command line to read STDIN and paste the script, __END__ makes DATA into STDIN, and you have to type Ctrl-d to close STDIN/DATA. Not a big deal, but that's the difference ;-)

    perl -le'print map{pack c,($-++?1:13)+ord}split//,ESEL'