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Types of interfaces
-------------------
Explicit interfaces:
* Used in: Java, C#, ...
* Compatibility: Same interface needs to be implemented.
Implicit interfaces:
* Used in: Go
* Compatibility: All declared method names/paramas need to match
Duck typing:
* Used in: Python
* Compatibility: All used method names/params need to match
Decoupled interfaces via function pointers:
* Used in: C
* Compatibility: Methods can be mixed & matched, as long as types match
Ideas
-----
Make it possible to define a "translation" from a class to an interface?
The translation could go either into a class or separately.
Example:
Openable.slul:
interface # Must come first in the source file
func open
bool keep_open
end
Box.slul:
implements Openable
func open
bool keep_open
code
...
end
Bottle.slul:
func pop
bool leave_cap_off
code
...
end
LockedDoor.slul:
func open
Key key
bool leave_open
code
...
end
UseInterfaces.slul:
func test
code
open_thing box
# How to solve these two?
open_thing bottle
open_thing locked_door
end
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