Conditional Swift testing

The problem Some tests need to be skipped when executing on CI (continuous integration like travis.org). What tests? In my case, it's performance tests. Why? because I can't trust all CI results and sometimes, randomly, some tests will fail without good reason, like this one: error: testPerformance : failed: The…

Package.swift - manual

Here is documentation for SPM manifest file Package.swift. I couldn't find a list of possible configuration values for Package.swift, so I created one, for future reference. I put here all available settings, with examples of use. Please find examples at the end of the post. Preamble Package.swift…

Documenting Swift protocol

In Swift, I can write documentation at a protocol level now. There is a kick-ass feature added recently to Xcode 8 (beta 4). If I add documentation of function at the protocol level, it's available at the level of implementation. Look, I wrote documentation to Task.run() and I can…

Status of Portable Swift code

Portable Swift source code is so damn hard to do. Main problem is that OSX and Linux Swift is using different Foundation codebase. Linux is using SwiftFoundation and OSX is using Foundation. What's the difference ? Foundation vs SwiftFoundation Foundation is written in Objective-C, it's complete and stable. SwiftFoundation on the…

Overload Swift type ambiguity

I may define default type for overloaded functions. sometimes. This is Swift return overloading that may lead to ambiguity: extension String { func encode() -> NSData? { return self.dataUsingEncoding(NSUTF8StringEncoding)?.base64EncodedDataWithOptions([]) } func encode() -> String? { return self.dataUsingEncoding(NSUTF8StringEncoding)?.base64EncodedStringWithOptions([]) } } I have two functions encode() that returns value of…