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Array.running_fold

running_foldinitfunction

Documentation​

Combines all the elements of the array, by iteratively applying the passed function with the next element of the array. After each step the value is stored resulting in a new array of the same size as self.

Arguments​

  • init: The initial value for the fold.
  • function: A function taking two elements and combining them.

Examples​

Compute the running sum of all of the elements in an array​

     [1, 2, 3].to_array.running_fold 0 (+)