Yes, I can call _AddRef and _Release by myself, but this doesn't look very nice.
And in future, I want to use other sort of key elements (eg strings). It would be nice if I can select any hash-function (a function, which maps my object to an integer) for my key objects so that I can use everything as keys. The code has to be extended a little bit to handle collisions.
If I find the time, I can do this.
And Burkhard is right, this should be merged into the FPL tree.
Albert
Am Donnerstag, den 17.08.2006, 11:25 +0200 schrieb Mattias:
On Thu, 17 Aug 2006 11:16:58 +0000 Albert Zeyer <[EMAIL PROTECTED]> wrote: > Which one do you mean? I only find there a few special lists. > > But I need an implementation of a map (key elements map to some data), > implemented with B-trees or similar (the key elements need to be > hashed for this), like hash_map in STL. In my case, I don't need a > special hash function because my key elements are object pointers. lcl/avglvltree.pas has TPointerToPointerTree Usage: Tree:=TPointerToPointerTree.Create; Tree[SomePointer]:=SomeData; Value:=Tree[SomePointer]; Mattias > > Albert. > > > Am Donnerstag, den 17.08.2006, 08:08 +0200 schrieb Michael Van > Canneyt: > > > > > On Thu, 17 Aug 2006, Albert Zeyer wrote: > > > > > Hi there. > > > > > > Is there any HashMap-implementation in the units of FPC? I didn't > > > find one. Is an implemenentation missing till now? How can you > > > life without it? :) > > > > There is a hash implementation in the contnrs unit, but I don't > > know if this is suitable for your purposes. > > > > Michael. > > > > _________________________________________________________________ > > To unsubscribe: mail [EMAIL PROTECTED] with > > "unsubscribe" as the Subject > > archives at http://www.lazarus.freepascal.org/mailarchives > > _________________________________________________________________ To unsubscribe: mail [EMAIL PROTECTED] with "unsubscribe" as the Subject archives at http://www.lazarus.freepascal.org/mailarchives
