2011/7/21 Arno Trautmann <[email protected]>: > Hi, me again, > > I forgot to ask that question in the last mail: What is the advantage of a > user-defined callback (still talking about luatexbase-mcb) over a > user-defined function? Maybe I still don't get the idea of a callback, but > in that case I don't see the difference. Is there any and if so, which?
LuaTeX "callbacks" are implementations of the Observer pattern and therefore make sense whenever using the Observer pattern is appropriate.
