ryanmjacobs

#!/bin/bash

str=${1^^}  # convert to uppercase
len=${#str} # get length of string

for ((perm=0; perm <= len; perm++)); do
    for ((i=0; i <= len; i++)); do
        lower=${str,,}   # convert to lowercase

        # Uppercase n-th letter for permutation

lukego

I use this data structure all the time. Can someone leave a comment and tell me what it's called?

1. insert(k,v): add a new value
2. lookup(k): lookup an existing value
3. age(): delete old entries (that have not been used since previous call to age())

# Initialize 'old' and 'new' to empty tables
local old, new = {}, {}