为什么THashedStringList不会忽略重复？

I have the following code:

我有以下代码:

var
  sl: THashedStringList;
begin
  sl:= THashedStringList.Create;
  sl.Duplicates := dupIgnore;
  sl.Add('12345');
  sl.Add('12345');
  sl.Add('12345');
  sl.Add('12345');
  sl.Add('12345');
  sl.Add('12345');
  sl.Add('12345');
  ShowMessage(IntToSTr(sl.Count));
end;

But when I see sl.Count, it gives me 7. What is the bug in this?

但是当我看到sl.Count时,它给了我7.这是什么错误?

1 个解决方案

#1

You need to set the Sorted property to TRUE in order to have the list ignore duplicates. The property is inherited from TStringList, and if you look at the documentation for TStringList.Duplicates you will find:

您需要将Sorted属性设置为TRUE,以使列表忽略重复项。该属性继承自TStringList,如果您查看TStringList.Duplicates的文档,您会发现:

Note: Duplicates does nothing if the list is not sorted.

注意:如果列表未排序,则重复项不执行任何操作。