List Map
Iterates `source`, evaluates `mapBody` per element with `loopVar` bound, and collects the results into a new list (preserving order). Use when the result feeds another list-sourced expression.
- Subclass Of
Iterating Expression
Iterates `source`, evaluates `mapBody` per element with `loopVar` bound, and collects the results into a new list (preserving order). Use when the result feeds another list-sourced expression.
Iterating Expression