Sign Up
Log In
Log In
or
Sign Up
Places
All Projects
Status Monitor
Collapse sidebar
openSUSE:12.2
perl-Contextual-Return
perl-Contextual-Return.spec
Overview
Repositories
Revisions
Requests
Users
Attributes
Meta
File perl-Contextual-Return.spec of Package perl-Contextual-Return
# # spec file for package perl-Contextual-Return # # Copyright (c) 2012 SUSE LINUX Products GmbH, Nuernberg, Germany. # # All modifications and additions to the file contributed by third parties # remain the property of their copyright owners, unless otherwise agreed # upon. The license for this file, and modifications and additions to the # file, is the same license as for the pristine package itself (unless the # license for the pristine package is not an Open Source License, in which # case the license is the MIT License). An "Open Source License" is a # license that conforms to the Open Source Definition (Version 1.9) # published by the Open Source Initiative. # Please submit bugfixes or comments via http://bugs.opensuse.org/ # Name: perl-Contextual-Return Version: 0.004003 Release: 0 %define cpan_name Contextual-Return Summary: Create context-sensitive return values License: GPL-1.0+ or Artistic-1.0 Group: Development/Libraries/Perl Url: http://search.cpan.org/dist/Contextual-Return/ Source: http://www.cpan.org/authors/id/D/DC/DCONWAY/%{cpan_name}-%{version}.tar.gz BuildArch: noarch BuildRoot: %{_tmppath}/%{name}-%{version}-build BuildRequires: perl BuildRequires: perl-macros BuildRequires: perl(Module::Build) BuildRequires: perl(Want) BuildRequires: perl(version) #BuildRequires: perl(Contextual::Return) #BuildRequires: perl(Contextual::Return::Failure) Requires: perl(Want) Requires: perl(version) %{perl_requires} %description Usually, when you need to create a subroutine that returns different values in different contexts (list, scalar, or void), you write something like: sub get_server_status { my ($server_ID) = @_; # Acquire server data somehow... my %server_data = _ascertain_server_status($server_ID); # Return different components of that data, # depending on call context... if (wantarray()) { return @server_data{ qw(name uptime load users) }; } if (defined wantarray()) { return $server_data{load}; } if (!defined wantarray()) { carp 'Useless use of get_server_status() in void context'; return; } else { croak q{Bad context! No biscuit!}; } } That works okay, but the code could certainly be more readable. In its simplest usage, this module makes that code more readable by providing three subroutines--'LIST()', 'SCALAR()', 'VOID()'--that are true only when the current subroutine is called in the corresponding context: use Contextual::Return; sub get_server_status { my ($server_ID) = @_; # Acquire server data somehow... my %server_data = _ascertain_server_status($server_ID); # Return different components of that data # depending on call context... if (LIST) { return @server_data{ qw(name uptime load users) } } if (SCALAR) { return $server_data{load} } if (VOID) { print "$server_data{load}\n" } else { croak q{Bad context! No biscuit!} } } %prep %setup -q -n %{cpan_name}-%{version} %build %{__perl} Build.PL installdirs=vendor ./Build build flags=%{?_smp_mflags} %check ./Build test %install ./Build install destdir=%{buildroot} create_packlist=0 %perl_gen_filelist %files -f %{name}.files %defattr(-,root,root,755) %doc Changes README %changelog
Locations
Projects
Search
Status Monitor
Help
OpenBuildService.org
Documentation
API Documentation
Code of Conduct
Contact
Support
@OBShq
Terms
openSUSE Build Service is sponsored by
The Open Build Service is an
openSUSE project
.
Sign Up
Log In
Places
Places
All Projects
Status Monitor