Function frequency
Returns an associative array of counts of every element in input. Works w/ any iterable.
uint[ForeachType!T] frequency(T)
(
T input
)
if (isIterable!T);
Examples
int[] foo = [1,2,3,1,2,4];
uint[int] frq = frequency(foo);
assert(frq .length == 4);
assert(frq[1] == 2);
assert(frq[4] == 1);