It's important to realize, that ObjC (and Smalltalk, Self...) does not have named arguments in the conventional sense (ie. like Python, &key arguments in CL...)

It's important to realize, that ObjC (and Smalltalk, Self...) does not have named arguments in the conventional sense (ie. like Python, &key arguments in CL...) but mix parts of message name with it's arguments. In essence, it only looks like named arguments - and on the other hand, this syntax essentially precludes support for real named arguments. For why this is bad look at all these #with:, #with:with: ... #withValues: methods in Smalltalk's standard library that are only thin wrappers used to simulate true optional or named arguments.