88 lines
3.2 KiB
RPMSpec
88 lines
3.2 KiB
RPMSpec
#
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# spec file for package perl-Algorithm-FastPermute
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#
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# Copyright (c) 2024 SUSE LLC
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#
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# All modifications and additions to the file contributed by third parties
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# remain the property of their copyright owners, unless otherwise agreed
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# upon. The license for this file, and modifications and additions to the
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# file, is the same license as for the pristine package itself (unless the
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# license for the pristine package is not an Open Source License, in which
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# case the license is the MIT License). An "Open Source License" is a
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# license that conforms to the Open Source Definition (Version 1.9)
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# published by the Open Source Initiative.
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# Please submit bugfixes or comments via https://bugs.opensuse.org/
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#
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%define cpan_name Algorithm-FastPermute
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Name: perl-Algorithm-FastPermute
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Version: 0.999.0
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Release: 0
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# 0.999 -> normalize -> 0.999.0
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%define cpan_version 0.999
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License: Artistic-1.0 OR GPL-1.0-or-later
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Summary: Rapid generation of permutations
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URL: https://metacpan.org/release/%{cpan_name}
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Source0: https://cpan.metacpan.org/authors/id/R/RO/ROBIN/%{cpan_name}-%{cpan_version}.tar.gz
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Source100: README.md
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BuildRequires: perl
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BuildRequires: perl-macros
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Provides: perl(Algorithm::FastPermute) = %{version}
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%undefine __perllib_provides
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%{perl_requires}
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%description
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Algorithm::FastPermute generates all the permutations of an array. You pass
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a block of code, which will be executed for each permutation. The array
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will be changed in place, and then changed back again before 'permute'
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returns. During the execution of the callback, the array is read-only and
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you'll get an error if you try to change its length. (You _can_ change its
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elements, but the consequences are liable to confuse you and may change in
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future versions.)
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You have to pass an array, it can't just be a list. It *does* work with
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special arrays and tied arrays, though unless you're doing something
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particularly abstruse you'd be better off copying the elements into a
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normal array first.
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It's very fast. My tests suggest it's four or five times as fast as
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Algorithm::Permute's traditional interface. If you're permuting a large
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list (nine or more elements, say) then you'll appreciate this enormously.
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If your lists are short then Algorithm::Permute will still finish faster
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than you can blink, and you may find its interface more convenient.
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In fact, the FastPermute interface (and code) is now also included in
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Algorithm::Permute, so you may not need both. Enhancements and bug fixes
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will appear here first, from where (at Edwin Pratomo's discretion) they'll
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probably make their way into Algorithm::Permute.
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The code is run inside a pseudo block, rather than as a normal subroutine.
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That means you can't use 'return', and you can't jump out of it using
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'goto' and so on. Also, 'caller' won't tell you anything helpful from
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inside the callback. Such is the price of speed.
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The order in which the permutations are generated is not guaranteed, so
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don't rely on it.
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%prep
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%autosetup -n %{cpan_name}-%{cpan_version}
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%build
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perl Makefile.PL INSTALLDIRS=vendor OPTIMIZE="%{optflags}"
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%make_build
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%check
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make test
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%install
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%perl_make_install
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%perl_process_packlist
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%perl_gen_filelist
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%files -f %{name}.files
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%doc Changes README
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%changelog
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