Very good episode about some functionality I always vaguely knew was there, but never considered using or even looking into.

Lo and behold, within a week after listening to it, I have already made use of my new-found knowledge to parse some predictably-formatted JSON!

I ran into issues with quoting the expression, and worked around them by assigned the expression to a variable and referring to that variable in the conditional.

Now I'm listening to #2669, and I understand exactly why it went wrong.

For the sake of readability, I actually think the assignment workaround was the best way to express it.