> > > I don't know what's make it complex if there are 2 or more subject in > the with? > > Context. A conflict case the two object were of the same class. >
Are you saying this case: with MyClassInstance1 as m, MyClassInstance2 do begin m.Property1 := 123; Property2 := 456; end; Here you don't know Property2 belongs to which object instance?? If so, this is not a problem at all, because even without "as" you still cannot distinguish, so the compiler should deny this kind of usage anyway, however, with "as", you can do this: with MyClassInstance1 as m1, MyClassInstance2 as m2 do begin m1.Property1 := 123; m2.Property2 := 456; end; To summarize, "as" does NOT try to eliminate context ambiguity (also it won't make a clear context ambiguous), but provided some convenience when needed.
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