Parse A String Into Individual Fields

Let's say you're reading in data from a file or otherwise dealing with an arbitrary string of data. If that string has a series of values separated by whitespace, you can parse it into individual fields with strings.Fields.

import (
    "fmt"
    "strings"
)

func main() {
    data := "3 5 2 6 7 1 9"
    fields := strings.Fields(data)

    fmt.Printf("Fields: %v", fields)
    // [3 5 2 6 7 1 9]
}

Here is another example where we can see that strings.Fields deals with multiple whitespace and surrounding whitespace:

import (
    "fmt"
    "strings"
)

func main() {
    data := "  go  java c++ rust "
    fields := strings.Fields(data)

    fmt.Printf("%v", fields)
    // [go java c++ rust]
}