Template:++: Difference between revisions
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(added flexibility with the return value) |
(covered case of pre-incrementing an undefined variable - now returns 0 instead of empty) |
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<onlyinclude>{{#ifeq:{{{2|}}}|pre|{{ | <onlyinclude>{{#ifeq:{{{2|}}}|pre|{{!!=|{{{1}}}|0}}}}{{#vardefine:{{{1}}}|{{#expr:{{#var:{{{1}}}}}+1}}}}{{#if:{{{2|}}}||{{#var:{{{1}}}}}}}</onlyinclude> | ||
==Purpose== | ==Purpose== |
Latest revision as of 22:16, November 15, 2014
1
Purpose
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
{{++| name }}
- name — The name of the variable (without #var syntax).
To return the variable pre-increment, use: {{++| name | pre }}
To not return the variable, use: {{++| name | no }}