AssertPresent
Generated from the engine's own definition: compute-engine's symbol, which we neither extend nor document by hand. No examples yet — the crosswalk is the reason it has a page.
Assert that a value is present: return it unchanged, or an expected-present error when it is ABSENT (Missing, Undefined, NaN, or Indeterminate). Nothing is an omission marker, not an absent datum, and passes through; an error operand propagates. Epsil spells it x?!. Only the value itself is checked, never the cells of a collection.
AssertPresent(any) -> unknownas compute-engine declares itTyped signatures
| Type | Package | Applies |
|---|---|---|
(any) -> unknown | compute-engine | always |