Is there an efficent way to retriver the last index of a Table

[ElegantBeef]

I am curious if there is a reason you're using a table instead of a sequence? I 
guess you're using the table identically except you have it unorded/hashing to 
access.

If you used a `seq[char]` you could use `mem[^1]` to get the last element in 
the sequence.