containsAll

Full name: taxi.stdlib.containsAll

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Signature

declare extension function <T> containsAll(collection: T[], searchTarget:T[]): Boolean

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Description

Returns true if the collection contains every element in the search targets array.

Returns true when searchTargets is empty (an empty set is a subset of every set).

// Check whether a product has all required tags
find {
   hasCertified: Boolean = ProductTag[].containsAll(['certified', 'in-stock'])
}

Known limitation: When the collection uses a semantic type (e.g. ProductTag inherits String), passing string literals as searchTargets always returns false due to a type comparison bug. See problems/containsAll.md. Use a String[] collection as a workaround.

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Examples

Returns true when the collection contains all specified search values, false if any are missing.