add btree_set with std (#2444)

This commit is contained in:
satellitex
2019-05-01 16:50:12 +09:00
committed by Gavin Wood
parent b6d5f6858c
commit 6be7eee754
+1
View File
@@ -35,4 +35,5 @@ pub use std::result;
pub mod collections {
pub use std::collections::btree_map;
pub use std::collections::btree_set;
}