std/object/findKey
Searches the given object by the given predicate and returns the found key or undefined.
Type signature
<T>(predicate: (value: T, key: string, context: object) => boolean) => (xs: GenericObject<T>) => string | undefinedExamples
findKey(({ x }) => x % 2 === 0)({
a: { x: 1 },
b: { x: 2 },
c: { x: 3 },
});
// ⇒ "b"
Questions
- How to find a key of an object by a predicate function?