itemswhere

Itemswhere is a concept used in programming and data querying to describe an operation that filters a collection of items based on a predicate. The term combines items with where and is commonly presented as a generic naming convention rather than a feature tied to a specific language. It captures the idea of selecting elements that meet a condition.

Functionally, an itemswhere operation receives a collection and a predicate, and yields a new collection containing only those elements for which the predicate evaluates to true. Implementations may be eager, producing the result immediately, or lazy, producing elements on demand. They often support complex predicates, including logical combinations, null checks, and nested expressions. Some libraries call it either filter, select, or where, depending on language idioms.

Usage examples (illustrative): itemswhere(products, price > 100 and in_stock) or products.filter(p => p.price > 100 && p.in_stock). In data processing pipelines, itemswhere is used to refine datasets before aggregation, transformation, or output. It underpins user interface features such as search results and category filters by producing smaller, relevant subsets of data.

Relationship and notes: Itemswhere is not a universal keyword; it is a descriptive term used in documentation and learning materials. Real-world languages implement similar filtering via filter, where, or select operations with language-specific syntax.

See also: filter, where clause, select, query language, data filtering.