A helper function to check if many things are valid in BrightScript

Howdy Everyone. I'm 1hitsong. I'm on the Jellyfin team and programmed things such as the OSD, music support, and playlist support in the Jellyfin Roku client.

I've just started a series where I share things I've learned and helpful code I've created from programming Roku channels. It's very early - only 2 posts so far, but I hope you enjoy.