unordered associative containers造句

The unordered associative containers are similar to the associative containers in the C + + Standard Library but have different constraints.
As their name implies, the elements in the unordered associative containers are not iterated through like a regular associative container.
In the programming language C + +, "'unordered associative containers "'are a group of class templates in the C + + Standard Library that implement hash table variants.
It's difficult to find unordered associative containers in a sentence. 用unordered associative containers造句挺难的