Bash hash functions

gistfile1.txt

# Simplified hash structure creation/set/get 
# Based on https://stackoverflow.com/a/2225712/118703, but modified.

hashKey() {
  # replace non-alphanumeric characters with underscore to make keys valid BASH identifiers
  echo "$1_$2" | sed -E "s/[^a-zA-Z0-9]+/_/g" | sed -E "s/^[^a-zA-Z0-9]+|[^a-zA-Z0-9]+\$//g"
}

hashPut() {
    local KEY=`hashKey $1 $2`
    eval "$KEY"="$3"
}

hashGet() {
    local KEY=`hashKey $1 $2`
    echo "${!KEY}"
}