This is the 3rd post in the Scala vs. Kotlin focus series. This week, I’d like to address two features: inline and infix - not because they’re related but because neither of them would be enough to fill a post. Inlining comes from C (and then C++). In those languages, a hint could be provided to the compiler through the inline keyword. By doing so, it may replace an inlined function call by the function body itself in order to skip the overhead of a function call.