Re: what is \consistsend
On Wed, 28 Jul 2004 20:08:28 +0200 Han-Wen Nienhuys [EMAIL PROTECTED] wrote: [EMAIL PROTECTED] writes: See: Design Patterns by Erich Gamma, Richard Helm, Ralph Johnson and John Vlissides (gang of four), Addison-Wesley, 1995. ISBN 0-201-63361-2. A must-have book for software designers! (Actually, this book motivated a whole bunch of other books by various authors over the last couple of years, some of which you may also find to be interesting.) I am a skeptic of the whole concept of pattern. Until someone can give a proper formalization of the concept, I will just solve the problem at hand with whatever technique I feel is appropriate. In other words, if you can explain me why what An observer pattern is, and why it would solve the engraver broadcast/acknowledge better, I will consider using it. (No, I don't feel inclined to read the book). -- Han-Wen Nienhuys | [EMAIL PROTECTED] | http://www.xs4all.nl/~hanwen They are simple: - Chain of Responsibility means just 'put the output of a function as the input of the next function', and - Observer Pattern means that you have several 'observators' which keep track on their state. When a certain state is present on an observer, the observer notifies another observer, and the another one then fetches the changed state and reacts according to the changed state. Design patterns are nice in the sense that they are the 'building blocks' of an UML diagram and manage to describe data flow to some extent (as a 2D diagram). Another family are the very commonly used resign pattern, which are to be avoided ;) http://www.dcc.unicamp.br/~oliva/fun/prog/resign-patterns -- Heikki Junes ___ lilypond-devel mailing list [EMAIL PROTECTED] http://lists.gnu.org/mailman/listinfo/lilypond-devel
Re: what is \consistsend
On Mon, 26 Jul 2004, Werner LEMBERG wrote: What is \consistsend good for? It is nowhere documented. IIRC (guru hackers, please correct me if I am wrong!), engravers listen to events following the design pattern of a responsibility chain rather than following an observer pattern (BTW, why?). Consequently, the order matters in which engravers are added to contexts. I guess \consistsend adds an engraver to the end of the chain, while \consists adds an engraver to the head of the chain, but I may be wrong. Greetings, Juergen Werner ___ lilypond-devel mailing list [EMAIL PROTECTED] http://lists.gnu.org/mailman/listinfo/lilypond-devel ___ lilypond-devel mailing list [EMAIL PROTECTED] http://lists.gnu.org/mailman/listinfo/lilypond-devel
Re: what is \consistsend
[EMAIL PROTECTED] writes: On Mon, 26 Jul 2004, Werner LEMBERG wrote: What is \consistsend good for? It is nowhere documented. IIRC (guru hackers, please correct me if I am wrong!), engravers listen to events following the design pattern of a responsibility chain rather than following an observer pattern (BTW, why?). Consequently, the order If you can tell me what those are, I can explain you. matters in which engravers are added to contexts. I guess \consistsend adds an engraver to the end of the chain, while \consists adds an engraver to the head of the chain, but I may be wrong. yup. -- Han-Wen Nienhuys | [EMAIL PROTECTED] | http://www.xs4all.nl/~hanwen ___ lilypond-devel mailing list [EMAIL PROTECTED] http://lists.gnu.org/mailman/listinfo/lilypond-devel
what is \consistsend
[EMAIL PROTECTED] writes: What is \consistsend good for? It is nowhere documented. \consistsend has been removed from CVS. -- Han-Wen Nienhuys | [EMAIL PROTECTED] | http://www.xs4all.nl/~hanwen ___ lilypond-devel mailing list [EMAIL PROTECTED] http://lists.gnu.org/mailman/listinfo/lilypond-devel
what is \consistsend
What is \consistsend good for? It is nowhere documented. Werner ___ lilypond-devel mailing list [EMAIL PROTECTED] http://lists.gnu.org/mailman/listinfo/lilypond-devel
