[swift-evolution] [DRAFT] Introducing a Debug Build Configuration Test

[Brent Royal-Gordon]

> I would like to update my draft proposal to introduce a test for debug configurations using a public function
> rather than a build configuration test.
> 
> * Would the stdlib team be open to that? 
> * What would be an appropriate name?  `debugConfiguration`? `debugBuild`? `isDebugBuild`? `isDebugConfiguration`?

I have a suggestion:

	if #isDebugBuild {
		...
	}

That would allow you to capture a caller's debug setting, just as you can capture their file and line number:

	class Logger {
		enum LogLevel {
			case fatal, error, warn, info, debug, trace, off
		}
		
		init(logLevel: LogLevel) {
			...
		}
		
		convenience init(debug: Bool = #isDebugBuild) {
			self.init(logLevel: debug ? .debug : .warn)
		}
		
		...
	}

-- 
Brent Royal-Gordon
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