There exists a problem when super and virtual are used at the same time.

[jumogehn]

This problem can be found in the README.md.

It's the example under '''Instances methods'''.

1 -- Use Yaci 1.2
2 -- http://lua-users.org/wiki/YetAnotherClassImplementation
3 require("yaci")
4
5 A = newclass("A")
6 function A:test() print(self.a) end
7 A:virtual("test") -- declare test() as being virtual; see below
8 function A:init(a) self.a = a end
9
10 B = newclass("B", A)
11 function B:test() print(self.a .. "+" .. self.b) end
12 function B:init(b) self.super:init(5) self.b = b end
13
14 b = B:new(3)
15 b:test() -- prints "5+3"
16 b.super:test() -- prints "5"
17 print(b.a) -- prints "5"
18 print(b.super.a) -- prints "5"

This is the code I tested.
The line number 16 causes error message like:

$ lua instances.lua
5+3
lua: instances.lua:11: attempt to concatenate field 'b' (a nil value)
stack traceback:
instances.lua:11: in function 'test'
instances.lua:16: in main chunk
[C]: ?

[omeryagmurlu]

I am getting the same error, it works when I put placeholder methods instead of setting it virtual.