This is a feature request for an adverse command to pushBack

Potential use:

_arr = [1,2,3,4,5,1]
_arr pullBack 4; /*_arr = [1,2,3,5,1]*/
_arr pullBack 1; /*_arr = [2,3,4,5]*/

Potentially can add something akin to pullBackUnique to differentiate between "removing one matching element from the array" and "removing *all* matching elements from the array"