nonrepeat
/ˈnɒnrɪˈpiːt/Definitions
1. noun
A data structure or algorithm that prevents or minimizes repetition of elements, such as a queue or a stack.
“The database uses a nonrepeat data structure to ensure that each user’s ID is unique.”
2. verb
To prevent or minimize the repetition of elements, such as in a sequence or a list.
“The programmer tried to nonrepeat the errors in the code, but it was a difficult task.”