summaryrefslogtreecommitdiff
path: root/Master/texmf-dist/source/latex/l3kernel/l3prop.dtx
diff options
context:
space:
mode:
authorKarl Berry <karl@freefriends.org>2019-03-05 22:35:14 +0000
committerKarl Berry <karl@freefriends.org>2019-03-05 22:35:14 +0000
commit68872ff6a2a91fa0e84763fc9316493d82075c95 (patch)
tree0546ec4c414553802e31a423aec44f74d252f645 /Master/texmf-dist/source/latex/l3kernel/l3prop.dtx
parent541c4ddf7c5b402b9cfe8af5ef4e49ffa15d3e83 (diff)
l3 (5mar19)
git-svn-id: svn://tug.org/texlive/trunk@50246 c570f23f-e606-0410-a88d-b1316a301751
Diffstat (limited to 'Master/texmf-dist/source/latex/l3kernel/l3prop.dtx')
-rw-r--r--Master/texmf-dist/source/latex/l3kernel/l3prop.dtx31
1 files changed, 30 insertions, 1 deletions
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3prop.dtx b/Master/texmf-dist/source/latex/l3kernel/l3prop.dtx
index b3f70773c4c..d83ea0f4ce2 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3prop.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3prop.dtx
@@ -43,7 +43,7 @@
% }^^A
% }
%
-% \date{Released 2019-02-15}
+% \date{Released 2019-03-05}
%
% \maketitle
%
@@ -216,6 +216,14 @@
% \end{texnote}
% \end{function}
%
+% \begin{function}[EXP]{\prop_count:N, \prop_count:c}
+% \begin{syntax}
+% \cs{prop_count:N} \meta{property list}
+% \end{syntax}
+% Leaves the number of key--value pairs in the \meta{property list} in
+% the input stream as an \meta{integer denotation}.
+% \end{function}
+%
% \section{Modifying property lists}
%
% \begin{function}[added = 2012-05-12]
@@ -872,6 +880,27 @@
% \end{macro}
% \end{macro}
%
+% \begin{macro}[EXP]{\prop_count:N, \prop_count:c}
+% \begin{macro}[EXP]{\@@_count:nn}
+% Counting the key--value pairs in a property list is done using the
+% same approach as for other count functions: turn each entry into a
+% \texttt{+1} then use integer evaluation to actually do the
+% mathematics.
+% \begin{macrocode}
+\cs_new:Npn \prop_count:N #1
+ {
+ \int_eval:n
+ {
+ 0
+ \prop_map_function:NN #1 \@@_count:nn
+ }
+ }
+\cs_new:Npn \@@_count:nn #1#2 { + 1 }
+\cs_generate_variant:Nn \prop_count:N { c }
+% \end{macrocode}
+% \end{macro}
+% \end{macro}
+%
% \begin{macro}[TF, tested = m3prop004]
% {\prop_pop:NnN, \prop_pop:cnN, \prop_gpop:NnN, \prop_gpop:cnN}
% Popping an item from a property list, keeping track of whether