Any
An any or some operation returns a Boolean indicating whether at least one element in a collection satisfies a predicate or, when none is supplied, is truthy.
Secrets of the JavaScript Ninja, Second Edition
An Array method that returns true if at least one element passes a callback test.
- How it is used
- Tests whether at least one array item satisfies a callback condition.
- How deep it goes
- Defines the callback test with a concrete example, without detailing execution mechanics.
- Examples
- Checks whether any ninja object has a weapon property.
- What you can do after
- Apply JavaScript's Array some method to test whether any item meets a condition.
Read how Secrets of the JavaScript Ninja, Second Edition explains any →
Kotlin in Action, 2E
any is a Kotlin standard-library operation that returns true when at least one element in a collection satisfies a predicate.
- How it is used
- Checks whether at least one collection or sequence element satisfies a Boolean predicate.
- How deep it goes
- Explains predicate use, logical equivalents, sibling operations, and empty-collection behavior without descending into implementation internals.
- Examples
- Uses an age predicate over people, integer comparisons, negated all and any, and an empty list.
- What you can do after
- Apply it via the Kotlin standard library to express readable existence checks over collections and sequences.
Related concepts
- equality by valuehas part · Equality by value is an equality semantics in which values are considered equal when they represent equivalent contents, regardless of object identity.
- allcontrasts with · An all operation returns a Boolean indicating whether every item in a collection satisfies a condition, or is truthy when no condition is specified.
- Objectequivalent to · java.lang.Object is the root class of Java’s reference-type hierarchy and defines methods inherited by Java reference types.
- logical ORequivalent to · Logical OR is a Boolean disjunction that evaluates to true when at least one operand or condition is true.
- listuses · A list is an ordered collection of elements arranged in a sequence.
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