Can Go's `range` Keyword Iterate Over Integer Ranges?

Ranging Over Integers in Go

Go's range keyword efficiently iterates over data structures like maps and slices. However, can it be used to iterate over a range of integers?

Question:

Is it possible to iterate over a range of numbers in Go using a syntax similar to:

for i := range [1..10] {
    fmt.Println(i)
}

Or is there a method like Ruby's Range class to represent ranges of integers?

Answer:

As of Go 1.22 (anticipated release in February 2024), you can achieve this using a simplified approach:

for i := range 10 {
    fmt.Println(i + 1)
}

It's important to note that ranging over an integer in Go iterates from 0 to one less than that integer.

Prior to Go 1.22, the standard approach was to use a traditional for loop:

for i := 1; i <= 10; i++ {
    fmt.Println(i)
}

This loop iterates from 1 to 10, inclusive.

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