• Sam Hu (62/62) Jan 04 2009 Hi,

Sam Hu <samhu.samhu gmail.com> writes:

Hi,
The sample of Tango container class,Comparators section:
http://www.dsource.org/projects/tango/wiki/ChapterStorage#Comparators
can not compile.I just don't know why.Please help on this.
//dcomp.d
module dcomp;

import tango.util.collection.TreeBag;
import tango.io.Stdout;
import tango.text.Ascii;
import tango.util.collection.model.Comparator;

void testComparator()
{
	
	auto nameSet=new TreeBag!(char[])(null,new class() Comparator!(char[])
	{
		int compare(char[] first,char[] second)
		{
			return Ascii.icompare(first,second);
		}
	});
	nameSet.addIf("Alice");
	nameSet.addIf("Bob");
	nameSet.addIf("AliCe");
	nameSet.addIf("BoB");
	nameSet.addIf("Alicf");
	nameSet.addIf("BoC");
	

	foreach(str;nameSet)
		Stdout.formatln("{}",str);
}

int main(char[][] args)
{
	testComparator;
	return 0;
}
//end
compile error message:
D:\Laguage\Dex>dsss build dcomp.d
dcomp.d => dcomp
+ c:\bigd\dsss\bin\rebuild.exe -Idsss_imports\ -I. -S.\ -Ic:\bigd\dsss\include\d
 -Sc:\bigd\dsss\lib\  -Ic:\bigd\dsss\include\d -Sc:\bigd\dsss\lib  -oqdsss_objs\
D  dcomp.d -ofdcomp
dcomp.d(11): class dcomp.testComparator.__anonclass6 base type must be class or
interface, not int delegate(char[], char[])
dcomp.d(11): constructor tango.util.collection.TreeBag.TreeBag!(char[]).TreeBag.
this () does not match parameter types (void*,__anonclass6)
dcomp.d(11): class tango.util.collection.TreeBag.TreeBag!(char[]).TreeBag member
 this is not accessible
dcomp.d(11): Error: cannot implicitly convert expression ((class __anonclass6 :
Object
{
    int compare(char[] first, char[] second)
{
return Ascii.icompare(first,second);
}
    void* this;
}
) , new __anonclass6) of type dcomp.testComparator.__anonclass6 to int delegate(
char[], char[])
dcomp.d(11): Error: expected 4 arguments, not 2
Command c:\bigd\dsss\bin\rebuild.exe returned with code 1, aborting.
Error: Command failed, aborting.