It is written:If you think of an eval STRING as a call back from the interpreter to the compiler, then you might think of a BEGIN as a call forward from the compiler into the interpreter. Both temporarily put the current activity on hold and switch modes of operation.

Pretty self-explanatory.
print       "start main running here\n";
eval        "BEGIN{print qq(BEGIN: before eval compilation at run-time
+\n)} END{print qq(END: from eval STRING\n)}";
eval       {BEGIN{print qq(BEGIN: before eval compilation at compile-t
+ime\n)} END{print qq(END: from eval BLOCK\n)}};
END       { print "END: done running\n"   }
BEGIN    { print "BEGIN: still compiling\n" }

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In reply to Re: On Compilation, Call Trigger Policy: Now vs Inline by sh1tn
in thread On Compilation, Call Trigger Policy: Now vs Inline by ian

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