[OT] Error handling in C3 language

[Kagamin]

https://c3-lang.org/language-common/optionals-advanced/
The language is quite nice, resembles BetterC, but also the first 
ergonomic language where I see the `Result` type in action. 
`Result` is also used for nullable types.
```
// Function returning an Optional
fn int? maybe_func() { /* ... */ }

fn void? test()
{
	// ❌ This will be a compile error
	// maybe_function() returns an Optional
	// and 'bar' is not declared Optional:
	// int bar = maybe_function();

	int bar = maybe_function()!;
	// ✅ The above is equivalent to:
	// int? temp = maybe_function();
	// if (catch excuse = temp) return excuse?;

	// Now temp is unwrapped to a non-Optional
	int bar = temp; // ✅ This is OK
}
```
But striving to be evolution of C, faults look like error code 
singletons and apparently don't carry much information.