Module array/indexOf

indexOf

• indexOf(target: string, list: string): number
• indexOf<T>(target: T, list: ArrayLike<T>): number
• indexOf(targer: string): (list: string) => number
• indexOf<T>(target: T): (list: ArrayLike<T>) => number

• Returns the position of the first occurrence of an item in an array, or -1 if the item is not included in the array.

  example

   indexOf(3, [1,2,3,4]); //=> 2
   indexOf(10, [1,2,3,4]); //=> -1
  

  Parameters

  • target: string

    The item to find.

  • list: string

  Returns number

  the index of the target, or -1 if the target is not found.

• Returns the position of the first occurrence of an item in an array, or -1 if the item is not included in the array.

  example

   indexOf(3, [1,2,3,4]); //=> 2
   indexOf(10, [1,2,3,4]); //=> -1
  

  Type parameters

  • T

  Parameters

  • target: T

    The item to find.

  • list: ArrayLike<T>

  Returns number

  the index of the target, or -1 if the target is not found.

• Returns the position of the first occurrence of an item in an array, or -1 if the item is not included in the array.

  example

   indexOf(3, [1,2,3,4]); //=> 2
   indexOf(10, [1,2,3,4]); //=> -1
  

  Parameters

  • targer: string

  Returns (list: string) => number

  the index of the target, or -1 if the target is not found.

  • • (list: string): number

    • Parameters

      • list: string

      Returns number

• Returns the position of the first occurrence of an item in an array, or -1 if the item is not included in the array.

  example

   indexOf(3, [1,2,3,4]); //=> 2
   indexOf(10, [1,2,3,4]); //=> -1
  

  Type parameters

  • T

  Parameters

  • target: T

    The item to find.

  Returns (list: ArrayLike<T>) => number

  the index of the target, or -1 if the target is not found.

  • • (list: ArrayLike<T>): number

    • Parameters

      • list: ArrayLike<T>

      Returns number