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(Created page with "<onlyinclude>{{#vardefineecho:{{{1}}}|{{#expr:{{#var:{{{1}}}}}-1}}}}</onlyinclude> ==Purpose== This template slightly simplifies the common task of decrementing a variable. I...") |
(incorporated enhancements from ++ (pre-decrement or null return options)) |
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| Line 1: | Line 1: | ||
<onlyinclude>{{# | <onlyinclude>{{#ifeq:{{{2|}}}|pre|{{!!=|{{{1}}}|0}}}}{{#vardefine:{{{1}}}|{{#expr:{{#var:{{{1}}}}}-1}}}}{{#if:{{{2|}}}||{{#var:{{{1}}}}}}}</onlyinclude> | ||
==Purpose== | ==Purpose== | ||
| Line 7: | Line 7: | ||
{{Usage|name}} | {{Usage|name}} | ||
{{Usage/Param|name|The name of the variable (without #var syntax).}} | {{Usage/Param|name|The name of the variable (without #var syntax).}} | ||
To return the variable ''pre-decrement'', use: {{Usage|name|pre}} | |||
To not return the variable, use: {{Usage|name|no}} | |||
{{Cat|Utility Templates}} | {{Cat|Utility Templates}} | ||
Latest revision as of 22:33, November 15, 2014
-1
Purpose
This template slightly simplifies the common task of decrementing a variable. It also returns the variable post-decrement. An undefined variable is decremented to -1.
Usage
{{--| name }}
- name — The name of the variable (without #var syntax).
To return the variable pre-decrement, use: {{--| name | pre }}
To not return the variable, use: {{--| name | no }}