Hello dear Swift community, this proposal might seem like some new syntax sugar, but it also aims to escape the 'do { }' scope from the 'do try catch‘ mechanism while making the existing error handling more powerful. Lets assume we have some ...

Guard statements interact with pattern-matching to ensure that control flow cannot continue unless a pattern is matched. This is a very convenient way to introduce non-optional variables from optional-valued expressions:     // func foo() ...