swift/lib/Basic/LangOptions.cpp has most of the conditional compilation macros (called “Language Options” in the compiler internally). Notably the swift() version macro is absent, and doesn’t seem to be defined anywhere… At time of writing the two undocumented additions, to the os(), arch(), and swift() set, are _endian() and _runtime(). I have no idea if they’re useful… Read more
Sigh. The Swift team give an impeccable impression of a group of people who’ve never actually tried to use Swift. An incredibly basic compiler task is to provide code a way to distinguish between debug & release builds, in order that it can behave accordingly (e.g. change the default logging verbosity, change asserts from fatal to… Read more
This was a pleasant surprise: I’m not sure how useful it is, since I don’t typically turn to a search engine to run random Swift code, but hey, kudos for effort.
Input code: Push button. Expect results (or at least bacon). Get: Foo.swift:76:21: error: expected ‘,’ separator .day: { String($0 + 1) }, ^ , Foo.swift:76:21: error: expected expression in list of expressions .day: { String($0 + 1) }, ^ Foo.swift:76:21: error: expected ‘,’ separator .day: { String($0 + 1) }, ^ , Believe it or… Read more
Foo.swift:75:49: error: expression was too complex to be solved in reasonable time; consider breaking up the expression into distinct sub-expressions let componentsOfPotentialInterest = [(Calendar.Component, ((Int) -> String))]( ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ The fuck?
Thanks to one of the genuine upsides of Swift, full Unicode support in the compiler itself, you can do: Finally you can express yourself honestly within your program: Or, if you prefer to be polite & British about it: You can go further, if you like, and have all manner of interesting things thrown about… Read more
You can readily tell that Swift was created by a C++ fanatic, by its fucking obtuse error messages. ⤹ Me Swift compiler ⤵︎ In today’s episode of “what the fuck do you want, compiler?”, we tackle: foo.swift:186:39: error: ambiguous reference to member ‘joined()’ log.debug(“\(thingies.joined(separator: “, “))”) ^~~~~~~~ Swift.BidirectionalCollection:27:17: note: found this… Read more