When passing to methods that write to the collection, T should be an In type.

比如IList(OfT)，当传给一个向集合中写入的方法时，T应该是In类型。

youdao

When passing to methods that write to the collection, T should be an In type.

比如IList(OfT)，当传给一个向集合中写入的方法时，T应该是In类型。

youdao