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OO example

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Federico Ceratto 2015-04-06 19:20:43 +01:00
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Nim-for-Python-Programmers.md
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@ -86,7 +86,26 @@ You can call a proc on objects with the ```anObject.foobar()```, but you can do
Nim does not have an implicit _self_.
It is possible to implement object-orientation features from other languages (like C++,Java,etc. or Smalltalk,Obj-C,Ruby,etc.) through libraries, thanks to the extensive meta-programming features of Nim. These are at the moment mostly work-in-progress.
It is possible to implement object-orientation features through libraries, thanks to the extensive meta-programming features of Nim. These are at the moment mostly work-in-progress.
Object orientation example:
```Nim
type Animal = ref object of RootObj
age: int
name: string
type Cat = ref object of Animal
playfulness: float
# A proc that can access and *modify* the object
proc increase_age(self: var Cat) =
self.age.inc()
var c = Cat(name: "Tom")
c.increase_age()
echo c.name, " ", c.age
```
### Inheritance