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Template:++: Difference between revisions
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covered case of pre-incrementing an undefined variable - now returns 0 instead of empty
(Created page with "<onlyinclude>{{#vardefineecho:{{{1}}}|{{#expr:{{#var:{{{1}}}}}+1}}}}</onlyinclude> ==Purpose== This template slightly simplifies the common task of incrementing a variable. I...") |
(covered case of pre-incrementing an undefined variable - now returns 0 instead of empty) |
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<onlyinclude>{{# | <onlyinclude>{{#ifeq:{{{2|}}}|pre|{{!!=|{{{1}}}|0}}}}{{#vardefine:{{{1}}}|{{#expr:{{#var:{{{1}}}}}+1}}}}{{#if:{{{2|}}}||{{#var:{{{1}}}}}}}</onlyinclude> | ||
==Purpose== | ==Purpose== | ||
This template slightly simplifies the common task of incrementing a variable. | This template slightly simplifies the common task of incrementing a variable. By default, it also returns the variable ''post-increment''. An undefined variable is incremented to 1. | ||
==Usage== | ==Usage== | ||
{{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-increment'', use: {{Usage|name|pre}} | |||
To not return the variable, use: {{Usage|name|no}} | |||
{{Cat|Utility Templates}} | {{Cat|Utility Templates}} | ||