As promised, a few thoughts about Go that is annoying.

No Generics

Code generation is tightly coupled with the tool chain. When I need to use code generation, i.e., enums and mocks, the use case can be solved with generics instead.

No lambda syntax

Scala has a lambda syntax to make it easy to work with anonymous function objects

val numbers = Seq(1, 5, 2, 100)
val doubled = numbers.map(
    n => n * 2
  )

Java has a similar syntax

    List<Integer> numbers = Lists.newArrayList(
      1, 5, 2, 100
    );
     
    numbers.sort(
      (n1, n2) -> n2 - n1
	);

In these languages, the type signature of the anonymous function are inferred. For scala, the anonymous function is inferred to have a single integer as the input and a single integer as output. For Java, the anonymous function is inferred to have two Integers as the input and an int as the output.

I really wish Go supported this. But it doesn’t.

• Go