Allow compiler control statements in container literals

[xwu (Xiaodi Wu)]

Allow conditional inclusion of elements in array/dictionary literals?

Was wondering if there would be any interest in being able to do the following in Swift: let a = [ 1, #if something 2, #endif 3, ] Would this sneak under the wire as bug fix or require a full blown proposal?

Future of Conditional Compilation

Future of Conditional Compilation Over the past couple of years, there have been a few attempts to make incremental improvements to conditional compilation directives, like allowing them inside array/dictionary literals or around catch clauses. The core team response to the first proposal does a good job of explaining why these improvements have never moved forward, even though there is near-universal support for the features in theory: the current implementation of #if creates complexity throu…

There's also an even more recent thread which for some reason I can't find at the moment.