public/javascripts/utils/array.js

   1 // Remove item in array (if present)
   2 var removeItem = function(array, rfun)
   3 {
   4     let index = array.findIndex(rfun);
   5     if (index >= 0)
   6         array.splice(index, 1);
   7 }
   8
   9 // Remove several item matching a condition
  10 var removeMultiple = function(array, rfun)
  11 {
  12     // Reverse loop because of the splice below
  13     for (let i=array.length-1; i>=0; i--)
  14     {
  15         if (rfun(array[i]))
  16             array.splice(i, 1);
  17     }
  18 }
  19
  20 // Double array intialization
  21 var doubleArray = function(size1, size2, initElem)
  22 {
  23     return _.map(_.range(size1), () => {
  24         return _.map(_.range(size2), () => {
  25             return initElem; //can be undefined
  26         })
  27     });
  28 }
  29
  30 var copyDoubleArray = function(arr)
  31 {
  32     return _.map(_.range(arr.length), (el1,i) => {
  33         return _.map(_.range(arr[0].length), (el2,j) => {
  34             return arr[i][j];
  35         })
  36     });
  37 }