Hello Léa!
Léa Gris <[email protected]> wrote:
> I was trying to play the the -v test to detect when an array or
> associative array has been declared, not necessarily assigned entries
> key, values, to not error when Bash runs with -o nounset
Just for the curious: What is your attention here?
I think that most useful questions (Is there an element in the array? Is
there a value for a given key?) can be answered in a simpler way:
#!/bin/bash
set -o nounset
# From what I learned today it seems to be good practice to always
# assign and empty array to when declaring an associative array:
declare -A assoc=()
echo ${#assoc[@]} # Are there elements in it?
assoc[key1]=val1
assoc[key2]=
for key in key1 key2 key3; do
if [[ -n ${assoc[$key]+isset} ]]; then
echo "Element for $key is set"
else
echo "No Element for $key"
fi
done
Best regards,
Martin
