Easter egg: you can use -> _ to ask the compiler what type it thinks the return type should be, given your body. Because it is only used for diagnostics it isn'

Easter egg: you can use -> _ to ask the compiler what type it thinks the return type should be, given your body. Because it is only used for diagnostics it isn't fully featured and there are things it doesn't cope well with, but it is there and works most of the time.