code: function getAllIndices(forValue, inArray) {
      var indices = []
      for (let index of Object.keys(inArray)) {
          if (inArray[index] === forValue) {
              indices.push(index)
          }
      }
      return indices
  }
docs: function getAllIndices
  
  @param {*} forValue
  @param {Array} inArray Array of values we are interested in.
  @returns {Array} Returns an array of all the indices that have given value
  
  @example
  
  getAllIndices(10, [10, 2, 3, 4, 5, 6, 7, 10, 10 ,10])
  returns ["0", "7", "8", "9"]