IsMissing
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.
True if the value is ABSENT — the `Missing` symbol, or a `NaN` number (regardless of provenance). R’s `is.na` (`TRUE` for both `NA` and `NaN`). There is no NaN-specific test operator (R’s `is.nan`).
IsMissing(any) -> booleanas compute-engine declares it