On Wed, 13 Nov 2013 14:33:27 -0500, Neal Becker wrote: > http://ceylon-lang.org/documentation/1.0/introduction/
I must say there are a few questionable design choices, in my opinion, but I am absolutely in love with the following two features: 1) variables are constant by default; 2) the fat arrow operator. By default, "variables" can only be assigned to once, and then not re- bound: String bye = "Adios"; //a value bye = "Adeu"; //compile error variable Integer count = 0; //a variable count = 1; //allowed (I'm not sure how tedious typing "variable" will get, or whether it will encourage a more functional-programming approach. But I think that's a very exciting idea and kudos to the Ceylon developers for running with it!) Values can be recalculated every time they are used, sort of like mini- functions, or thunks: String name { return firstName + " " + lastName; } Since this is so common in Ceylon, they have syntactic sugar for it, the fat arrow: String name => firstName + " " + lastName; If Python steals this notation, we could finally bring an end to the arguments about early binding and late binding of default arguments: def my_function(a=[early, binding, happens, once], b=>[late, binding, happens, every, time] ): ... Want! These two features alone may force me to give Ceylon a try. -- Steven -- https://mail.python.org/mailman/listinfo/python-list