# Custom Set Create a custom set type. Sometimes it is necessary to define a custom data structure of some type, like a set. In this exercise you will define your own set. How it works internally doesn't matter, as long as it behaves like a set of unique elements. To run the tests simply run the command `go test` in the exercise directory. If the test suite contains benchmarks, you can run these with the `-bench` flag: go test -bench . For more detailed info about the Go track see the [help page](http://exercism.io/languages/go). ## Submitting Incomplete Problems It's possible to submit an incomplete solution so you can see how others have completed the exercise.