Maximilian Keßler (via gitlab runner)
58750758fd
Build branch same-aux-files (7a35a13) from kesslermaximilian/LatexPackages
112 lines
3.6 KiB
TeX
112 lines
3.6 KiB
TeX
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% Copyright © 2022 Maximilian Keßler
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%
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% This work may be distributed and/or modified
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%
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% 1. under the LaTeX Project Public License and/or
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% 2. under the GNU General Public License
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%
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% Distribution under conditions of the LaTeX Project Public License,
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% requires either version 1.3 of this license or (at your option)
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% any later version.
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% The latest version of this license is in
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% http://www.latex-project.org/lppl.txt
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% and version 1.3 or later is part of all distributions of LaTeX
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% version 2005/12/01 or later.
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%
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% This work has the LPPL maintenance status \`maintained'.
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%
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% The Current Maintainer of this work is Maximilian Keßler.
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%
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%
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% Distribution under the GNU General Public License requires either
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% version 3 or (at your opinion) any later version.
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%
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% This package has been generated by PyTeX, available at
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% https://github.com/kesslermaximilian/PyTeX
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% and built from source file 'powerset.pysty3'.
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% It is STRONGLY DISCOURAGED to edit this source file directly, since local
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% changes will not be versioned by Git and overwritten by the next build. Always
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% edit the source file and build the package again.
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%
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% Build details:
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% PyTeX version: v1.2.0-31-gc9bb0e8 (commit c9bb0e8)
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% Source code version: same-aux-files (commit 7a35a13)
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%
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% This LaTeX package is free software and is dual-licensed
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% under the LPPLv1.3c and the GPLv3 licenses.
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% You may use it freely for your purposes.
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% The latest version of the package sources can be obtained
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% via GitLab under
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% https://gitlab.com/latexci/packages/LatexPackages
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% The latest version of the built packages can be obtained via GitLab under
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% https://gitlab.com/latexci/packages/LatexPackagesBuild
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% For further information see the urls above.
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% Reportings of bugs, suggestions and improvements are welcome, see the README
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% at the Git repository for further information.
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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\ProvidesExplPackage{mkessler-powerset}{2022/02/03}{same-aux-files}{Iterate over powerset of clist}
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\ExplSyntaxOn
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%%% Iterate over powerset of claist
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\clist_new:N \l_powerset_copied_clist
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\seq_new:N \l_powerset_saved_seq
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\cs_generate_variant:Nn \clist_remove_all:Nn { N V }
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% Pseudocode of this macro
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% remove left -> push on stack
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% call recursive
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% add left to 'extra'
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% call recursive
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% remove left from 'extra'
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% add from stack to left
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\cs_new:Npn \__powerset_clist_foreach_aux:Nn #1 #2
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{
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\clist_if_empty:NTF \l_powerset_copied_clist
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{
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#2
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}
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{
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\clist_get:NN \l_powerset_copied_clist \l_tmpa_tl
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\seq_push:NV \l_powerset_saved_seq \l_tmpa_tl
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\clist_pop:NN \l_powerset_copied_clist { \l_tmpa_tl }
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\__powerset_clist_foreach_aux:Nn #1 {#2}
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\seq_get:NN \l_powerset_saved_seq \l_tmpa_tl
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\clist_put_left:NV #1 \l_tmpa_tl
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\__powerset_clist_foreach_aux:Nn #1 {#2}
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\seq_get:NN \l_powerset_saved_seq \l_tmpa_tl
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\clist_remove_all:NV #1 \l_tmpa_tl
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\clist_push:NV \l_powerset_copied_clist \l_tmpa_tl
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\seq_pop:NN \l_powerset_saved_seq \l_tmpa_tl
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}
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}
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% Usage:
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% \clist_use_powerset:Nn {clist variable name}{code for each subset}
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% This will execute #2 for each subset of the listname given as #1
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% In #2, the name given as #1 can be used for the current subset
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% After execution, the value of #1 is restored
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\cs_new:Npn \powerset_clist_foreach:Nn #1 #2
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{
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\clist_set_eq:NN \l_powerset_copied_clist #1
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\clist_clear:N #1
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\clist_remove_duplicates:N \l_powerset_copied_clist
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\__powerset_clist_foreach_aux:Nn #1 {#2}
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\clist_set_eq:NN #1 \l_powerset_copied_clist
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}
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