collectionswhere
collectionswhere is an informal term used to describe the operation of selecting elements from a collection that satisfy a given predicate. It is analogous to filtering in functional programming, the SQL WHERE clause, and the Where method found in languages like LINQ. The term is not part of a formal language specification, but it appears in documentation, tutorials, and discussions as a concise way to refer to conditional collection selection.
The name blends “collection” and “where,” highlighting that the result consists of those elements for which a
Common forms are functional-style and method-call styles. Pseudo-code examples include:
- collectionswhere(numbers, n -> n > 10)
- numbers.where(n => n > 10)
Behaviorary considerations include whether evaluation is eager (producing a concrete result immediately) or lazy (producing elements
collectionswhere is related to filtering, selection, and subset construction. It often appears alongside map, reduce, and
As a term, collectionswhere serves as a descriptive shorthand rather than a standardized keyword in programming