[kstenerud]

For every feature X, there is a programming language Y that has had it for decades.

It's not a question of inventing it, but rather of making it mainstream popular.

[kjeetgill]

It's extremely common in plenty of popular languages: Java's a big one, and if you count dynamic languages most do.

[catach]

I expect that erlang is still significantly more popular than zig.

[kstenerud]

Of course it is. Zig is an up-and-comer, so most established languages will be more popular at this stage. But Zig aims to be a mostly general purpose language (which is what the majority of mainstream languages are), whereas Erlang does not.