| Name : perl-Carp-Clan
| |
| Version : 6.06
| Vendor : SUSE LLC < https://www_suse_com/>
|
| Release : 1.24
| Date : 2018-05-25 20:26:09
|
| Group : Development/Libraries/Perl
| Source RPM : perl-Carp-Clan-6.06-1.24.src.rpm
|
| Size : 0.05 MB
| |
| Packager : https://www_suse_com/
| |
| Summary : Report errors from perspective of caller of a \"clan\" of modules
|
Description :
This module is based on \"\'Carp.pm\'\" from Perl 5.005_03. It has been
modified to skip all package names matching the pattern given in the \"use\"
statement inside the \"\'qw()\'\" term (or argument list).
Suppose you have a family of modules or classes named \"Pack::A\", \"Pack::B\"
and so on, and each of them uses \"\'Carp::Clan qw(^Pack::);\'\" (or at least
the one in which the error or warning gets raised).
Thus when for example your script \"tool.pl\" calls module \"Pack::A\", and
module \"Pack::A\" calls module \"Pack::B\", an exception raised in module
\"Pack::B\" will appear to have originated in \"tool.pl\" where \"Pack::A\" was
called, and not in \"Pack::A\" where \"Pack::B\" was called, as the unmodified
\"\'Carp.pm\'\" would try to make you believe \':-)\'.
This works similarly if \"Pack::B\" calls \"Pack::C\" where the exception is
raised, etcetera.
In other words, this blames all errors in the \"\'Pack::*\'\" modules on the
user of these modules, i.e., on you. \';-)\'
The skipping of a clan (or family) of packages according to a pattern
describing its members is necessary in cases where these modules are not
classes derived from each other (and thus when examining \'AATTISA\' - as in the
original \"\'Carp.pm\'\" module - doesn\'t help).
The purpose and advantage of this is that a \"clan\" of modules can work
together (and call each other) and throw exceptions at various depths down
the calling hierarchy and still appear as a monolithic block (as though
they were a single module) from the perspective of the caller.
In case you just want to ward off all error messages from the module in
which you \"\'use Carp::Clan\'\", i.e., if you want to make all error messages
or warnings to appear to originate from where your module was called (this
is what you usually used to \"\'use Carp;\'\" for \';-)\'), instead of in your
module itself (which is what you can do with a \"die\" or \"warn\" anyway), you
do not need to provide a pattern, the module will automatically provide the
correct one for you.
I.e., just \"\'use Carp::Clan;\'\" without any arguments and call \"carp\" or
\"croak\" as appropriate, and they will automatically defend your module
against all blames!
In other words, a pattern is only necessary if you want to make several
modules (more than one) work together and appear as though they were only
one.
|
RPM found in directory: /vol/rzm3/linux-opensuse/distribution/leap/15.4/repo/oss/noarch |
