#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

After setting DEBUG=1 in your GCC_PREPROCESSOR_DEFINITIONS Build Settings I prefer using a function to make this calls:

func executeInProduction(_ block: () -> Void)
{
    #if !DEBUG
        block()
    #endif
}

And then just enclose in this function any block that I want omitted in Debug builds:

executeInProduction {
    Fabric.with([Crashlytics.self]) // Compiler checks this line even in Debug
}

The advantage when compared to:

#if !DEBUG
    Fabric.with([Crashlytics.self]) // This is not checked, may not compile in non-Debug builds
#endif

Is that the compiler checks the syntax of my code, so I am sure that its syntax is correct and builds.