everyItem

everyItem is a term used in programming to refer to a function or method that operates on all elements of a collection. The exact behavior and signature of everyItem vary across languages and libraries, but the common idea is to address every item in a sequence rather than a single element.

Common usages fall into a few patterns. A predicate form tests whether every item satisfies a condition, returning a boolean value that indicates the overall result. In other contexts, everyItem may be a helper that applies a transformation or action to each element, producing a new collection or side effects, similar to map or forEach in other ecosystems. Some implementations provide a way to access or iterate through all items collectively, rather than performing a single-element operation.

In practice, developers encounter everyItem in data validation, collection querying, and testing scenarios where uniform properties or behaviors need to be verified across an entire dataset. Because everyItem is not standardized across languages, it is essential to consult the specific library’s or language’s documentation to understand its return type, arguments, and exact semantics.

See also: all, every, allMatch, map, forEach.

Note that the phrase is used as a convenience name rather than a universal construct, so its presence and behavior should be verified within the relevant programming context.