Différences

Ci-dessous, les différences entre deux révisions de la page.

--- 2_composition:macros:repeter_une_commande_pour_chaque_element_d_une_liste [2018/05/26 23:47]
joseph.wright
+++ 2_composition:macros:repeter_une_commande_pour_chaque_element_d_une_liste [2018/12/02 23:46]
jejust
@@ Ligne 1: / Ligne 1: @@
----
+====== Repeating something for each 'thing' in a set ======
-title: Repeating something for each 'thing' in a set
-category: programming
-permalink: /FAQ-repeat-set
-date: 2014-06-10
----
-# Repeating something for each 'thing' in a set
 As another question
-([repeating something a given number of times](/FAQ-repeat-num))
+([[FAQ-repeat-num|repeating something a given number of times]])
 explains, TeX is not explicitly designed for 'regular' programming
 operations. As a result, we must resort to arcane tricks to do the
@@ Ligne 15: / Ligne 9: @@
 with repeating an operation for each of a given set of objects.
-The [`etoolbox`](https://ctan.org/pkg/etoolbox) package provides iteration over a
+The [[ctanpkg>etoolbox|etoolbox]] package provides iteration over a
-comma-separated list of items, in its `\docsvlist` and
+comma-separated list of items, in its ''\docsvlist'' and
-`\forcsvlist` commands; they are well-described in the package
+''\forcsvlist'' commands; they are well-described in the package
-documentation.  The [`datatool`](https://ctan.org/pkg/datatool) package manages ''databases''
+documentation.  The [[ctanpkg>datatool|datatool]] package manages "databases"
 (of its own definition) and you may iterate over entries in such a
-database using the command `\DTLforeach`.
+database using the command ''\DTLforeach''.
-The [`forarray`](https://ctan.org/pkg/forarray) package defines its own ''list'' and ''array''
+The [[ctanpkg>forarray|forarray]] package defines its own "list" and "array"
-structures, together with commands `\ForEach` and `\ForArray`
+structures, together with commands ''\ForEach'' and ''\ForArray''
 which enable a command to be executed for each element in a list or
 array, respectively.
-The [`dowith`](https://ctan.org/pkg/dowith) defines a pair of macros `\DoWith` and
+The [[ctanpkg>dowith|dowith]] defines a pair of macros ''\DoWith'' and
-`\StopDoing` that process each ''thing'' between them; a trivial
+''\StopDoing'' that process each "thing" between them; a trivial
 example of use is:
-```latex
+<code latex>
 \usepackage{dowith}
 ...
@@ Ligne 36: / Ligne 31: @@
 \newcommand{\foo}[1]{\message{#1+}
 \DoWith\foo a{BBB}c\StopDoing
-```
+</code>
 which produces terminal output:
-```latex
+<code latex>
 a+ BBB+ c+
-```
+</code>
-so, the macros have found 3 ''things'', including one with braces
+so, the macros have found 3 "things", including one with braces
 around it.  (The interpolated spaces come from the primitive
-`\message` command.)
+''\message'' command.)
 The only constraint is that all commands in the enclosed stuff are
-''expandable'' (which means, for example, that you may not use
+"expandable" (which means, for example, that you may not use
 commands with optional arguments).
-From the same stable (as [`dowith`](https://ctan.org/pkg/dowith)) comes the package
+From the same stable (as [[ctanpkg>dowith|dowith]]) comes the package
-[`commado`](https://ctan.org/pkg/commado), that provides commands `\DoWithCSL` (apply a
+[[ctanpkg>commado|commado]], that provides commands ''\DoWithCSL'' (apply a
 command to each element of a comma-separated-variable list) and
-`\DoWithBasesExts` (apply a command to each of a set of files,
+''\DoWithBasesExts'' (apply a command to each of a set of files,
-defined by base name and ''extension'').  Use of these `\DoWith*`
+defined by base name and "extension").  Use of these ''\DoWith*''
 macros is also expandable (if the command applied to the list elements
 is itself expandable).
+---
+//Source:// [[faquk>FAQ-repeat-set|Repeating something for each 'thing' in a set]]
+{{htmlmetatags>metatag-keywords=(LaTeX,programming)
+metatag-og:title=(Repeating something for each 'thing' in a set)
+metatag-og:site_name=(FAQ LaTeX francophone)
+}}