[Tutor] beginning to code
bartc <bc at freeuk.com>:
> On 22/09/2017 10:23, Marko Rauhamaa wrote:
>> However, Python doesn't need any language changes to implement memory
>> slots. A memory slot could be defined as any object that implements
>> "get()" and "set(value)" methods:
> I didn't understand your examples.
> Can Python be used to write, say, a swap() function that works with any
> argument types (not just classes or lists)? Example:
> def swap(&a,&b): # made up syntax
> a, b = b, a
> print (x,y) # "Z" and "10"
Yes, following my recipe:
def swap(ref_a, ref_b):
a, b = ref_a.get(), ref_b.get()
x = 10
y = "Z"
swap(slot_ref(locals(), "x"), slot_ref(locals(), "y"))
print(x, y) # "Z" and 10