[maccard]

It’s one of those things that I never knew I wanted until I started using it, and now i miss it when it’s not available.The reason you want it is the same reason you want to declare a variable in the statement of a for loop rather than pre declaring and using a while loop

[trelane]

I've used it in go a lot. If you want to kludge it, you can still put a block around the if. But it's not nearly as nice