Template:Str left long/doc: Difference between revisions
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<!-- Categories and interwikis go at the bottom of this page. --> | <!-- Categories and interwikis go at the bottom of this page. --> | ||
The '''[[Template: | The '''[[Template:Str left long]]''' is a general utility, as a string-handling utility template, to extract the left-hand side of long [[text string]]s beyond 500 to thousands of characters long, using a [[Lua script]] module. | ||
__NOTOC__ | __NOTOC__ | ||
== Usage == | == Usage == | ||
| Line 17: | Line 17: | ||
== Performance considerations == | == Performance considerations == | ||
Because {str_left_long} uses a Lua module, it depends on the speed of the [[Lua script]] processing, which in February 2013, ran at the speed of 180 per second for repeated uses of {str_left_long}. By comparison, the [[ | Because {str_left_long} uses a Lua module, it depends on the speed of the [[Lua script]] processing, which in February 2013, ran at the speed of 180 per second for repeated uses of {str_left_long}. By comparison, the [[SV:parser function]] {padleft:} runs at over 1,250 per second, to extract the left-hand side of a string, but only up to 500 long. | ||
== See also == | == See also == | ||
* [[Template: | * [[Template:Str left]] - extracts from short strings 1-500 long, 5x times faster | ||
<includeonly> | <includeonly> | ||
Latest revision as of 07:38, 12 April 2014
 | This is a documentation subpage for Template:Str left long. It contains usage information, categories and other content that is not part of the original template page. |
 | Uses Lua: |
The Template:Str left long is a general utility, as a string-handling utility template, to extract the left-hand side of long text strings beyond 500 to thousands of characters long, using a Lua script module.
Usage
- {{str left long|abcdef|3}} gives: abc
Examples
- {{str left long|abcdef|2}} gives: ab
- {{str left long|abcdef|5}} gives: abcde
- {{str left long|abcdef|0}} gives: [nothing]
- {{str left long|abcdef|7}} gives:String Module Error: String subset index out of range
- {{str left long|255.32|2}} gives: 25
- {{str left long|..60,000 long...|59999}} gives: ...59,999 long...
Performance considerations
Because {str_left_long} uses a Lua module, it depends on the speed of the Lua script processing, which in February 2013, ran at the speed of 180 per second for repeated uses of {str_left_long}. By comparison, the SV:parser function {padleft:} runs at over 1,250 per second, to extract the left-hand side of a string, but only up to 500 long.
See also
- Template:Str left - extracts from short strings 1-500 long, 5x times faster