Function filterAt

  • Keep values at given keys.

    Type Parameters

    • K

    • V

    Parameters

    • x: Map<K, V>

      a map

    • ks: K[]

      keys

    Returns Map<K, V>

    {[k₀, v₀], [k₁, v₁], ...} | kᵢ ∈ ks; [kᵢ, vᵢ] ∈ x

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