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Perl in a Nutshell, 2nd Edition
book

Perl in a Nutshell, 2nd Edition

by Nathan Patwardhan, Ellen Siever, Stephen Spainhour
June 2002
Beginner content levelBeginner
759 pages
80h 42m
English
O'Reilly Media, Inc.
Content preview from Perl in a Nutshell, 2nd Edition

Options

-p

Sets the variable $diagnostics::PRETTY to true

-v

Prints the perldiag manpage introduction, then any diagnostic messages

As a pragma:

use diagnostics [-verbose]

enables the use of diagnostics in your program (and enables Perl’s -w flag). Compilation is then subject to the enhanced diagnostics, which are issued to STDERR. Set the diagnostics::PRETTY variable in a BEGIN block to provide nicer escape sequences for pagers, so your output looks better. The -verbose option prints the perldiag manpage introduction, then any diagnostic messages. Functions are:

enable

Turns diagnostics on at runtime

disable

Turns diagnostics off at runtime

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Publisher Resources

ISBN: 0596002416Errata Page