Interlude.Condition.Not
In Depth¶
Condition.Not(condition)
Inverts a condition: true where it was false, and false where it was true.
Often avoidable — there is already Condition.NotEquals, Condition.IsEmpty and Condition.IsNotChecked — and the direct one reads better in a graph than a negated one. Where this earns its place is inverting something composite: not (A and B).
The inputs are:
condition(ConditionExpr) — The condition to invert.
Returns condition — The condition.
Search terms: not, invert, negate, opposite.
About the Condition nodes¶
Tests over a form's own answers, for use with the Behavior nodes.
Conditions name the field they read by its key — the same key the answer appears under in the results. They are re-evaluated whenever that field changes, so a form's behaviour is described once, declaratively, rather than wired up event by event.
Comparisons are type-aware: numbers compare numerically even when typed as text, lists compare element by element, and text comparison is case-sensitive unless ignoreCase says otherwise.
Example File¶
An example graph ships beside this page: Interlude.Condition.Not.dyn
The form it builds:
