On Monday, 28 April 2025 at 04:59:24 UTC, Orion wrote:
In which programming scenarios should alias be used instead of
enum?
So far I have only found a simplified notation of a generic
lambda:
alias id = (x) => x; x; , which does not work in the case of
enum.
There is also a difference in overloading a non-generic lambda:
alias m = (int x) => x;
alias m = (float x) => 0.5 + x;
- alias overloads a function with the same name.
enum e = (int x) => x;
///enum e = (float x) => x; //error
- enum does not.
At the compiler level, enum lambda is represented as a literal.
But how is alias represented? As an expression?
Alias is the proper way, there's specifications for them to work
as a way to overload whereas with enum there's no support.
Rememeber that
```
enum e = (int x) => x;
```
is a shortcut to
```
enum e
{
e = (int x) => x
}
```
so always use `alias`.
