Function hasEntry

  • Check if lists has an entry.

    Returns

    k ∈ x[0]; v ∈ x[1]; k ⇒ v? | [k, v] = e

    Type Parameters

    • K

    • V

    • W = V

    Parameters

    • x: Lists<K, V>

      lists

    • e: [K, V]

      search entry

    • fc: CompareFunction<V | W> = null

      compare function (a, b)

    • fm: MapFunction<K, V, V | W> = null

      map function (v, k, x)

    Returns boolean

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