Vorlage:Str ≥ len/Doku
Dieser Artikel wurde aus einer englischen Sprachversion importiert und wurde noch nicht vollständig übersetzt. Bitte hilf mit, den Text auf deutsch verfügbar zu machen. |
Dies ist eine nachgeordnete Seite der Dokumentation von Vorlage:Str ≥ len. Sie enthält Informationen zur Verwendung, Kategorisierung und zu anderem Inhalt, der nicht Bestandteil der originalen Vorlage-Seite ist. |
Diese Vorlage benutzt Module:String, Skripte geschrieben in der Programmiersprache Lua. Bitte informiere dich dort, wenn du mehr über die Sprache und ihren Einsatz erfahren willst. Diese Vorlagen sollte im Regelfall nicht ersetzt werden. |
This is the {{str ≥ len}} meta-template.
It helps other templates check if a string is "longer or equally long" vs. "shorter" than a given length.
Usage
BearbeitenThis template takes 3 to 4 unnamed parameters.
Here is how to check if the string "abcde" is 4 characters or more:
{{str ≥ len | abcde | 4 | Equal or longer. | Shorter. }}
Which returns this:
- Equal or longer.
Templates have a problem to handle parameter data that contains equal signs "=
". But that is easily solved by using numbered parameters. Here we check if the string "ab=cde" is 100 characters or more:
{{str ≥ len | 1 = ab=cde | 2 = 100 | 3 = Equal "=" or longer. | 4 = Shorter, not "=". }}
Which returns this:
- Shorter, not "=".
It probably is a good habit to always use the numbered parameters, since you might not know beforehand exactly how the data will look that your template will feed to this meta-template.
Parameters
BearbeitenDetailed parameter explanation:
{{str ≥ len | 1 = A string | 2 = A length | 3 = Data to return/render when "longer than or equally long". | 4 = Data to return/render when "shorter than". }}
Empty or undefined strings are considered to be of 0 length.
Length values below 0 are considered to be 0.
Technical details
BearbeitenThe potential alternative templates names {{str >= len}} or (for the opposite) {{str < len}} do not work in MediaWiki.
Even though this is a string handling template it uses very efficient code. (While some of the other string handling templates are probably so heavy on the servers that we perhaps should not use them.)
Templates have problems to handle parameter data that contains pipes "|
", unless the pipe is inside another template {{name|param1}}
or inside a piped link [[Help:Template|help]]
. Thus templates can not handle wikitables as input unless you escape them by using {{!}}
. This makes it hard to use wikitables as parameters to templates. Instead the usual solution is to use "HTML wikimarkup" for the table code, which is more robust.