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XLR: Extensible Language and Runtime The art of turning ideas into code XL, an extensible programming language, implements the ideas of Concept Programming. If you want to know more, you should start here. Function pointers Tuesday, April 8, 2008 Added support for function pointers in Revision 370. The real problem was support for overloading, as illustrated in this test, reproduced below: procedure Foo (X : integer) is WriteLn "Foo ", X procedure Foo (X : real) is WriteLn "Foo (real) ", X procedure Bar (X : integer) is WriteLn "Bar ", X type proc_ptr is procedure (X : integer) to Invoke (callback : proc_ptr) is callback 3 Invoke Foo Invoke Bar In that example, the problem is with Invoke Foo, which needs to be able to decide which Foo is to be selected (the first one in that case). April 2008 Sun Mon Tue Wed Thu Fri Sat 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Mar  May Copyright 2008 Christophe de Dinechin (Blog) E-mail: XL Mailing List (polluted by spam, unfortunately)