Did you know `try/catch` can be an expression? ```...

# announcements

[orangy]

Did you know try/catch can be an expression?

val snapshot = try {
            cache[key] ?: return null
        } catch (e: IOException) {
            // Give up because the cache cannot be read.
            return null
        }

snapshots gets type as DiskLruCache.Snapshot, no nulls
from okhttp3 code converted to Kotlin