ts-data-forge
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    Function lastIndexOf

    • Gets the last index of a value in an array.

      Type Parameters

      • const Ar extends readonly unknown[]

      Parameters

      • array: Ar
      • searchElement: Ar[number]

      Returns -1 | ArrayIndex<Ar>

      const fruits = ['apple', 'banana', 'orange', 'banana'];

      const lastBanana = Arr.lastIndexOf(fruits, 'banana');
      const lastApple = Arr.lastIndexOf(fruits, 'apple');
      const notFound = Arr.lastIndexOf(fruits, 'grape');

      // Curried version
      const findLastBanana = Arr.lastIndexOf('banana');
      const index = findLastBanana(fruits);

      console.log(lastBanana); // => 3
      console.log(lastApple); // => 0
      console.log(notFound); // => -1
      console.log(index); // => 3

    • Gets the last index of a value in an array.

      Type Parameters

      • E

      Parameters

      • searchElement: E

      Returns (array: readonly E[]) => -1 | Uint32

      const fruits = ['apple', 'banana', 'orange', 'banana'];

      const lastBanana = Arr.lastIndexOf(fruits, 'banana');
      const lastApple = Arr.lastIndexOf(fruits, 'apple');
      const notFound = Arr.lastIndexOf(fruits, 'grape');

      // Curried version
      const findLastBanana = Arr.lastIndexOf('banana');
      const index = findLastBanana(fruits);

      console.log(lastBanana); // => 3
      console.log(lastApple); // => 0
      console.log(notFound); // => -1
      console.log(index); // => 3

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