client/src/utils/array.js

   1 // Remove item(s) in array (if present)
   2 export const ArrayFun =
   3 {
   4   remove: function(arr, rfun, all)
   5   {
   6     const index = arr.findIndex(rfun);
   7     if (index >= 0)
   8     {
   9       arr.splice(index, 1);
  10       if (!!all)
  11       {
  12         // Reverse loop because of the splice below
  13         for (let i=arr.length-1; i>=index; i--)
  14         {
  15           if (rfun(arr[i]))
  16             arr.splice(i, 1);
  17         }
  18       }
  19     }
  20   },
  21
  22   // Double array intialization
  23   init: function(size1, size2, initElem)
  24   {
  25     return [...Array(size1)].map(e => Array(size2).fill(initElem));
  26   },
  27
  28   range: function(max)
  29   {
  30     return [...Array(max).keys()];
  31   },
  32 };