How to simplify a Bash construct without using if then else!?

Question

bash

Depending on the Y or N key pressed, the Variable variable takes the value TRUE (y) or FALSE (n)...
Is it possible to describe this construction in a simpler way:

read -r -n1 -p "Ask some question. y/n " key
if [${key^^}=="Y"]; then
    variable=true
else
    variable=false
fi

Answer 1

You can remove else

read -r -n1 -p "Ask some question. y/n " key
variable=false
if [ ${key^^} == "Y" ]; then
    variable=true
fi

You can use && and ||

read -r -n1 -p "Ask some question. y/n:" key
[ ${key^^} = 'Y' ] && variable=true || variable=false

Answer 2

Can be even easier

read -r -n1 -p "Ask some question. y/n:"
[ ${REPLY^^} == 'Y' ]
variable=$?

Well, then check the value of variable. If 0, then everything is fine (true), if not 0, then the equality is not true (false)