External module "utils/inmap-right/docs/types/index.d"

Export assignment inmapRight

• inmapRight<T, U>(collection: Collection<T>, fcn: Callback<T, U>, thisArg?: ThisParameterType<Callback<T, U>>): Collection<T>

• Invokes a function once for each element in a collection and updates the collection in-place, iterating from right to left.

  Notes

  • For dynamic array resizing, the only behavior made intentionally consistent with inmap (iterating from left to right) is when elements are pushed onto the beginning (end) of an array. In other words, for inmap(), [].push() behavior is consistent with inmapRight() [].unshift() behavior.

  Type parameters

  • T

  • U

  Parameters

  • collection: Collection<T>

    input collection

  • fcn: Callback<T, U>

    function to invoke

  • Optional thisArg: ThisParameterType<Callback<T, U>>

    execution context

  Returns Collection < T >

  input collection

  Example

  function scale( value, index, collection ) {
      console.log( '%s: %d', index, value );
      return value * index;
  }
  
  var arr = [ 1, 2, 3, 4 ];
  
  var out = inmapRight( arr, scale );
  // returns [ 0, 2, 6, 12 ]
  
  var bool = ( out === arr );
  // returns true