Without the "async" keyword, you can still write async code. It looks totally different because you have to control the state machine of task scheduling. Green threads are a step further than the async keyword because they have none of the function coloring stuff.
You may think of use of an async keyword as explicit async code but that is very much not the case.
If you want to see async code without the keyword, most of the code of Linux is asynchronous.
You may think of use of an async keyword as explicit async code but that is very much not the case.
If you want to see async code without the keyword, most of the code of Linux is asynchronous.