#ifdef replacement in the Swift language

Question

In C/C++/Objective C you can define a macro using compiler preprocessors. Moreover, you can include/exclude some parts of code using compiler preprocessors.

Answer 1

Moignans answer here works fine. Here is another peace of info in case it helps,

#if DEBUG
    let a = 2
#else
    let a = 3
#endif

You can negate the macros like below,

#if !RELEASE
    let a = 2
#else
    let a = 3
#endif