A Go library which allows you to iterate over a sequence integers, in a simple and memory efficient way.

Note: This is simply a package with a one line function, it probably does not deserve to be in its own package. But I think it shows a powerful feature of Go (empty structs).

go get github.com/umahmood/iter

When you need to loop over a sequence of integers, you may write:

for i := 0; i < 10; i++ {
    // ...
}

With iter you can simply write:

for i := range iter.N(10) {
    fmt.Printf("%d ", i)
}

Output:

0 1 2 3 4 5 6 7 8 9

A nifty thing is that iter.N(10) and iter.N(100) consume the same amount of storage. This is possible because in Go, the empty struct consumes no storage.

See the LICENSE file for license rights and limitations (MIT).