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sum(group, value)

Operator Type: 

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Operator First Added: 

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 Function   [other Function type actions]

 Group   [operators of similar scope]

 Mathematical   [other Mathematical operators]




This computes the arithmetic Number sum of every value in a group. See sum_if() for a related conditional operator.

group describes the notes to be examined and may be any group designator including a find() query. sum() omits notes for which $Searchable is false.

value can be any expression, but is typically an attribute value.

For example,

$MyNumber = sum(children,$WordCount); 

constructs the current word count of the children of the note.

See also List/Set.sum().