Interlude.Compute.Sum
In Depth¶
Compute.Sum(keys)
Adds up several fields. Anything that is not a number counts as zero, and a multi-select of numbers adds up its own items.
The inputs are:
keys(list of object) — The fields to add.
Returns computation — The computation.
Search terms: sum, total, add, plus.
About the Compute nodes¶
Values worked out from other answers, for use with Behavior.WithComputed.
A computed field is driven by the form rather than by the user: it recalculates whenever anything it reads changes, in dependency order, so a total built on a subtotal is always consistent. Computed values that depend on each other in a loop are rejected when the form is built, before a window appears.
Example File¶
An example graph ships beside this page: Interlude.Compute.Sum.dyn
The form it builds:
