B::Debug

Walks the Perl syntax tree, printing debug information about ops. Invoke as:

perl -MO=Debug[,exec] filename

If exec is specified, walks in execution order rather than in syntax order.

Get Perl in a Nutshell, 2nd Edition now with the O’Reilly learning platform.

O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.