> no commonly used high level language supports the coroutine
This might have been the case back in 2000, but these days many languages do support it, including C++20, Lua, Python, Ruby, etc.
This might have been the case back in 2000, but these days many languages do support it, including C++20, Lua, Python, Ruby, etc.
Also, the refinement at the end of the article: "We arrange an extra function parameter, which is a pointer to a context structure; we declare all our local state, and our coroutine state variable, as elements of that structure." sounds like implementing a closure to me. You make the callee a lambda which would use an outside var/context/state to determine what to do or with what value. Am I understanding this correctly?
Nope. It was introduced 10 years later, as part of PEP 255, released in Python 2.2.
as lmm pointed out, python didn't have generators and yield until 2.2. icon, which tim peters adapted the idea from, had them quite a bit earlier than that, but i think it's reasonable to describe icon as not being a commonly used language, then or now
(python's generators are closer syntactically to icon's generators than they are semantically)