Template:For/doc

Template:for (talk, backlinks, edit) containing:

---

{{for/aux
  |c={{{call}}}
  |pv={{{pv|1}}}
  |prefix={{{prefix|}}}
  |postfix={{{postfix|}}}
  |s={{{sep|}}}
  |pc1={{{pc1|=}}}
  |pc2={{{pc2|=}}}
  |pc3={{{pc3|=}}}
  |pc4={{{pc4|=}}}|
1={{{1|@}}}|2={{{2|@}}}|3={{{3|@}}}|...|150={{{150|@}}}
}}

---

using Template:for/aux (talk, backlinks, edit) containing:

---

{{{{{subst|}}}#ifeq:{{{1|@}}}|@||       {{{{{c}}}|{{{pc1}}}|{{{pc2}}}|{{{pc3}}}|{{{pc4}}}|{{{pv}}}={{{prefix}}}{{{1  }}}{{{postfix}}}}}}}}
{{{{{subst|}}}#ifeq:{{{2|@}}}|@||{{{s}}}{{{{{c}}}|{{{pc1}}}|{{{pc2}}}|{{{pc3}}}|{{{pc4}}}|{{{pv}}}={{{prefix}}}{{{2  }}}{{{postfix}}}}}}}}
{{{{{subst|}}}#ifeq:{{{3|@}}}|@||{{{s}}}{{{{{c}}}|{{{pc1}}}|{{{pc2}}}|{{{pc3}}}|{{{pc4}}}|{{{pv}}}={{{prefix}}}{{{3  }}}{{{postfix}}}}}}}}
...
{{{{{subst|}}}#ifeq:{{{150|@}}}|@||{{{pc1}}}|{{{pc2}}}|{{{pc3}}}|{{{pc4}}}|{{{pv}}}={{{prefix}}}{{{150}}}{{{postfix}}}}}}}}

---

without the newlines and spaces.

Description

The template calls a specified template up to 150 times, where one parameter takes each of a list of values; in addition to the variable parameter, for up to 4 parameters a fixed value can be specified.

Usage

{{for
  |call=template to call
  |sep=what to separate the entries with
  |pc1=parameter name=constant value
  |pc2=parameter name=constant value
  |pc3=parameter name=constant value
  |pc4=parameter name=constant value
  |pv=name of variable parameter
  |prefix=constant first part of the value of pv
  |postfix=constant last part of the value of pv
  |list of up to 150 parameter values (without prefixes and postfixes), with separator "|"
}}

Examples

Code	Result
1{{for |00|01|02|03|04|05|06|07|08|09 |10|11|12|13|14|15|16|17|18|19 |20|21|22|23|24|25|26|27|28|29 |30|31|32|33|34|35|36|37|38|39 |40|41|42|43|44|45|46|47|48|49 |50|51|52|53|54|55|56|57|58|59 |60|61|62|63|64|65|66|67|68|69 |70|71|72|73|74|75|76|77|78|79 |80|81|82|83|84|85|86|87|88|89 |90|91|92|93|94|95|96|97|98|99 |call=x1 |sep=, 1 }}	1

Note that the last part of the separator is used as a prefix; the first prefix needs to be put separately.

---

{{for|a|3||c|call=x3|sep=-}} using

Timbe: x3

gives

---

{{for|p|||3||c|call=t|sep=///}} using

Timbe: t

gives

{{For/doc}}p{{For/doc}}p{{3}}p{{For/doc}}p{{C}}

---

{{for|call=short DOW|3|1|5|3|2|sep= / }} using

Timbe: short DOW

gives

---

{{for|call=t2|pc1=2=constant|abc|def|ghi}} using

Timbe: t2

gives:

{{Def}}abc{{Ghi}}

---

{{for|call=concat and link to w:en:|sep=, |pc1=John_|pv=2||Lennon|Wayne}} using Template:Timc gives

A for-call can give a row or column of choice, e.g. using

Timbe: power

:

{{for|sep=,|2|3|call=power|prefix=2,}} gives

{{for|sep=,|2|3|call=power|prefix=3,}} gives

{{for|sep=,|2|3|call=power|postfix=,2}} gives

{{for|sep=,|2|3|call=power|postfix=,3}} gives

---

A constant parameter is ignored if it is the same as the (implicitly or explicitly given) variable parameter:

{{for|call=t2|pc1=1=7|pc2=2=5|abc|def|ghi|sep=,}} using

Timbe: t2

gives:

{{Def}}abc{{Ghi}}

---

{{for|sep=,|call=x3|1=a=b|2=c=d|3=e}} gives

---

{{#expr:{{for|call=plus square|pv=1|1|2|3|4|5}}}} gives .

Semi-recursive: see Template talk:Foreach/recursion

Tables

XML:

<table border=1>
<tr><td>{{for|call=X1|3|1|5|3|2|sep=</td><td>}}</td></tr>
<tr><td>{{for|call=square|3|1|5|3|2|sep=</td><td>}}</td></tr>
</table>

gives

---

HTML:

<table border=1>
<tr><td>{{for|call=X1|3|1|5|3|2|sep=<td>}}
<tr><td>{{for|call=square|3|1|5|3|2|sep=<td>}}
</table>

gives

---

Wikitable:

{| border=1
|-
|{{for|call=X1|3|1|5|3|2|sep={{!!}}}}
|-
|{{for|call=square|3|1|5|3|2|sep={{!!}} }}
|}

gives

---

XML:

<table border=1>
<tr><td>{{for|call=table row example|3|1|5|3|2|sep=</td></tr><tr><td>|pc1=sep1=</td><td>}}
</table>

gives

---

HTML:

<table border=1>
<tr><td>{{for|call=table row example|3|1|5|3|2|sep=<tr><td>|pc1=sep1=<td>}}
</table>

gives

---

Wikitable:

{| border=1
|-
|{{for|call=table row example|3|1|5|3|2|sep= 
{{!}}-
{{!}}|pc1=sep1={{!!}}}}
|}

gives

---

Wikitable sortable:

{| class="wikitable sortable" 
|-
!number!!square
|-
|{{for|call=table row example|3|1|5|3|2|sep= 
{{!}}-
{{!}}|pc1=sep1={{!!}}}}
|}

gives

number	square

Reserved name

A reserved name that cannot be used as list item is "@"; it is ignored, but e.g. @1 is not:

{{for|a|@|@1|b|c|call=x3|sep=-}} gives

Substitution

Substitution of Template:For/aux with "subst:" does not work correctly: it always gives 150 calls of the specified template, the excess ones with parameter "@". For example:

{{subst:for|a|3||c|call=x3|sep=-|subst=subst:}} using

Timbe: x3

gives:

Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3{ {subst:#ifeq:@|@||-Template:X3}}-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3-Template:X3

Special:ExpandTemplates gives the correct results.

This is a consequence of the fact that, calling a template with {{{p|q}}}, with p undefined, subst results in the wikitext {{{p|q}}}, while Special:ExpandTemplates gives the wikitext q. Template:For/aux uses parameter names like v{{{12|@}}}; if parameter 12 is undefined it matters whether v{{{12|@}}} is taken as the actual name or reduces to the name v@.

Related templates

This template is another version of

Timbe: foreach

. That version has stopped working due to some software change.

Comparison:

{{{v{{{2 }}}|{{{s }}}{{{{{c}}}|{{{pc1}}}|..|{{{pc4}}}|{{{pv}}}={{{2}}}}}}}}
{{{v{{{2|}}}|{{{s|}}}}}}{{{{{{{{v{{{2|}}}|c}}}|x0}}} |{{{pv}}}={{{2}}}|{{{pc1}}}|..|{{{pc4}}}}}

In the first case (for) the whole output is the default of a parameter named v{{{i }}} that is defined iff the ith parameter is not defined.

In the second case (foreach) the existence is checked twice, once for the separator and once for the main output; if the ith parameter is not defined a dummy template is called.

Both are based on en:Template:foreach (talk, backlinks, edit), now deleted. Differences are:

• The Meta versions handle empty parameter values in the regular way, while the en version ignores them.
• Template For allows "=" in parameter values
• The difference in the case of conflicting parameter names, mentioned above.

See also

• Timbe: tblb
• Help:Parameter default
• Help:Array
• mw:Extension:LoopFunctions