我想格式化一个整数数组。 如何发送数组，以便每个动词接收数组的不同元素？

Question

I have a variable array of integers that I would like to format into a string. When I pass the array, it is placed into the first format verb and the rest are listed as missing. For example, I pass [10, 100, 250, 99] and a format of "%02d-%04d-%04d-%02d". I want it to return "10-0100-0250-99". What is the correct way to do this in go?

package main

include (
    "fmt"
)

func main() {
    nums := []int{10,100,250,99}
    format := "%02d-%04d-%04d-%02d
"

    fmt.Printf(format, 10, 100, 250, 99)
    fmt.Printf(format, nums)
}

[10 100 250 99]-%!d(MISSING)-%!d(MISSING)-%!d(MISSING) (Wrong) 10-0100-0250-99 (correct)

Answer 1

You either need to pass in the elements individually:

nums := []int{10,100,250,99}
format := "%02d-%04d-%04d-%02d
"
fmt.Printf(format, nums[0], nums[1], nums[2], nums[3])

Or use the correct type for the fmt.Printf argument, which is []interface{}:

nums := []interface{}{10,100,250,99}
format := "%02d-%04d-%04d-%02d
"
fmt.Printf(format, nums...)