Function contains

Returns true if contents of needles is contained by haystack.

const a = ['apples','oranges','pears','mandarins'];
const b = ['pears', 'apples'];
contains(a, b); // True

const c = ['pears', 'bananas'];
contains(a, b); // False ('bananas' does not exist in a)

contains<V>(haystack, needles, eq?): boolean
Type Parameters
- V
Parameters
- haystack: ArrayLike<V>
- needles: ArrayLike<V>
- eq: ((a: V, b: V) => boolean) = ...
  - - (a, b): boolean
    - Default comparer function is equiv to checking a === b. Use isEqualValueDefault to compare by value, via comparing JSON string representation.
      
      Parameters
      a: V
      b: V
      Returns boolean
Returns boolean