CPANPLUS::Error
CPANPLUS::Error
NAMESYNOPSIS
DESCRIPTION
FUNCTIONS
CLASS METHODS
GLOBAL VARIABLES
NAME
CPANPLUS::Error
SYNOPSIS
use CPANPLUS::Error qw[cp_msg cp_error];
DESCRIPTION
This module provides the error handling code for the CPANPLUS libraries, and is mainly intended for internal use.
FUNCTIONS
cp_msg("message
string" [,VERBOSE])
Records a message on the stack, and prints it to
"STDOUT" (or actually $MSG_FH,
see the "GLOBAL VARIABLES" section
below), if the "VERBOSE" option is true.
The "VERBOSE" option defaults to
false.
msg()
An alias for "cp_msg".
cp_error("error
string" [,VERBOSE])
Records an error on the stack, and prints it to
"STDERR" (or actually $ERROR_FH,
see the "GLOBAL VARIABLES" sections
below), if the "VERBOSE" option is true.
The "VERBOSE" options defaults to
true.
error()
An alias for "cp_error".
CLASS METHODS
CPANPLUS::Error−>stack()
Retrieves all the items on the stack. Since
"CPANPLUS::Error" is implemented using
"Log::Message", consult its manpage for
the function "retrieve" to see what is
returned and how to use the items.
CPANPLUS::Error−>stack_as_string([
TRACE ])
Returns the whole stack as a printable string. If the
"TRACE" option is true all items are
returned with "Carp::longmess" output,
rather than just the message. "TRACE"
defaults to false.
CPANPLUS::Error−>flush()
Removes all the items from the stack and returns them. Since
"CPANPLUS::Error" is implemented using
"Log::Message", consult its manpage for
the function "retrieve" to see what is
returned and how to use the items.
GLOBAL VARIABLES
$ERROR_FH
This is the filehandle all the messages sent to "error()" are being printed. This defaults to *STDERR.
$MSG_FH
This is the filehandle all the messages sent to "msg()" are being printed. This default to *STDOUT.
Opportunity
Personal Opportunity - Free software gives you access to billions of dollars of software at no cost. Use this software for your business, personal use or to develop a profitable skill. Access to source code provides access to a level of capabilities/information that companies protect though copyrights. Open source is a core component of the Internet and it is available to you. Leverage the billions of dollars in resources and capabilities to build a career, establish a business or change the world. The potential is endless for those who understand the opportunity.
Business Opportunity - Goldman Sachs, IBM and countless large corporations are leveraging open source to reduce costs, develop products and increase their bottom lines. Learn what these companies know about open source and how open source can give you the advantage.
Free Software
Free Software provides computer programs and capabilities at no cost but more importantly, it provides the freedom to run, edit, contribute to, and share the software. The importance of free software is a matter of access, not price. Software at no cost is a benefit but ownership rights to the software and source code is far more significant.
Free Office Software - The Libre Office suite provides top desktop productivity tools for free. This includes, a word processor, spreadsheet, presentation engine, drawing and flowcharting, database and math applications. Libre Office is available for Linux or Windows.
Free Books
The Free Books Library is a collection of thousands of the most popular public domain books in an online readable format. The collection includes great classical literature and more recent works where the U.S. copyright has expired. These books are yours to read and use without restrictions.
Source Code - Want to change a program or know how it works? Open Source provides the source code for its programs so that anyone can use, modify or learn how to write those programs themselves. Visit the GNU source code repositories to download the source.
Education
Study at Harvard, Stanford or MIT - Open edX provides free online courses from Harvard, MIT, Columbia, UC Berkeley and other top Universities. Hundreds of courses for almost all major subjects and course levels. Open edx also offers some paid courses and selected certifications.
Linux Manual Pages - A man or manual page is a form of software documentation found on Linux/Unix operating systems. Topics covered include computer programs (including library and system calls), formal standards and conventions, and even abstract concepts.
