Xcode-beta (7A120f): Add support for try support for guard statements

Originator:owensd
Number:rdar://21359273 Date Originated:12-Jun-2015 09:43 AM
Status:Open Resolved:
Product:Developer Tools Product Version:Xcode-beta (7A120f)
Classification:Enhancement Reproducible:Always
 
The current syntax for handling errors can be really cumbersome, especially for one-line catch-all type errors, such as:

    do {
        try canThrow()
    }
    catch {
        fatalError("bad mojo")
    }

It would be really great if we could use the guard statement to clean this code up.

    guard try canThrow() else { fatalError("bad mojo") }
    guard let f = try canThrowReturns() else { fatalError("bad mojo") }

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