[V2.0.11:] An inconsistence in "static method" Topic is solved

[V2User]

I think CCC.CC2() should act like a static method in Code1 and pass CCC as ths, but it throws instead.
[Code1:]

Code: Select all

class CCC {
	class CC2 {
		static Call(ths){

		}
	}
}
c:=CCC.CC2()

image.png (26.9 KiB) Viewed 920 times

[Marium0505]

Quote from

https://www.autohotkey.com/docs/v2/Objects.htm#Custom_Classes_class

However, due to the way methods work for Objects, WhichClass.NestedClass() implicitly passes WhichClass as the first parameter, equivalent to WhichClass.NestedClass.Call(WhichClass).
Unless static Call() is overridden, this parameter is automatically passed to __New.

[V2User]

@Marium0505
I have seen it you gave.
However, if the nested class CCC.CC2 is the member of an object rather than the member of an class, the same code will work instead:
[Code2:]

Code: Select all

class CCC {
	class CC2 {
		static Call(ths){

		}
	}
}
; c:=CCC.CC2()
CCC2:={}
CCC2.CC2:=CCC.CC2
c2:=CCC2.cc2()
;both of them will output 1:
OutputDebug(CCC is Object),OutputDebug(CCC2 is Object)
;it's inconsistent too:
CCC.DefineProp('CC3',{call:CCC.CC2})
c3:=CCC.CC3()

image.png (32.37 KiB) Viewed 880 times

Obviously, they are not consistent. Because CCC as well as CCC2 is an object in fact. So both of the objects should behave the same.
Therefore, I think the current behavior of CCC should be modified to keep consistent with CCC2.

[lexikos]

The quoted paragraph applied to pre-release versions; it is not correct for v2.0.0+, as is demonstrated by the following:

Code: Select all

#Requires AutoHotkey v2

class WhichClass {
	class NestedClass {
		__new(x,*) {
			MsgBox type(x)
		}
	}
}

WhichClass.NestedClass(1) ; Integer, not Class

The behaviour is currently only explained in v2-changes:

Nested class definitions now produce a dynamic property with get and call accessor functions instead of a simple value property. This is to support the following behaviour:

• Nested.Class() does not pass Nested to Nested.Class.Call and ultimately __New, which would otherwise happen because this is the normal behaviour for function objects called as methods (which is how the nested class is being used here).
• Nested.Class := 1 is an error by default (the property is read-only).
• Referring to or calling the class for the first time causes it to be initialized.

Source: Changes from v1.1 to v2.0 | AutoHotkey v2

I think there is no particular reason for a nested class to behave identically to a static method. It is a class definition, not a method definition. If you want to make it act differently, you can do whatever you want with DefineProp during class initialization.

[V2User]

Quote from

https://www.autohotkey.com/docs/v2/Objects.htm#Custom_Classes_class

However, due to the way methods work for Objects, WhichClass.NestedClass() implicitly passes WhichClass as the first parameter, equivalent to WhichClass.NestedClass.Call(WhichClass).
Unless static Call() is overridden, this parameter is automatically passed to __New.

Sorry, maybe I have some misunderstanding of the paragraph you quoted. It supports my point, rather than being against.

[lexikos]

The documentation error has been fixed in v2.0.12.