Template:Add

USAGE

{{ Add | prefix= | template= | suppresserrors= | ... }}

This template adds numbers provided in its parameters.

Restrictions: |prefix= must not be a prefix of the word "prefix", "template" or "suppresserrors". (an empty prefix is a prefix of all. Prefixes "p", "t" and "s" are also out).

EXAMPLES

• Pass parameters with a prefix given in the parameter {{{prefix|x}}} (needs to not be a prefix of "prefix"), and the template will add them.

Example: {{ Add | prefix=x | x1=1 | xqwerty=2 | x2=3 | x3= | other=100 }}

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Empty parameters count as 0, parameters not starting with x are not added. If a parameter starting with x contains characters not recognised as numbers by {{#expr}}, then {{#expr}} will throw an error unless |suppresserrors= is not empty. If |suppresserrors= is not empty, then any invalid values will be treated as 0.

• You can also provide a template that will take the values of the parameters and translate them into numbers. The template specified in {{{template}}} will be given one parameter and will be expected to produce a number.

Example: {{ Add | prefix=y | template=IO | y1=yes | y2=no | y3=false | y4=true }}

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• If no prefix is given, all parameters are added. This means that you can't provide a template to translate values into numbers.

Example: {{ Add | 1 | 2 | 3 | 4 | asdf=5 | x= }}

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• In addition to displaying the result, it also stores it in a variable called {{#var: sum<prefix>}}. This means that you can use the result of this template in more than one place.

Example: {{ Add | x1=1 | x2=1 | prefix=x }} {{ Add | y1=2 | y2=2 | prefix=y }} Results: {{#var: sumy}} and {{#var: sumx}}

2 4 Results: 4 and 2

CODE

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