Check out example codes for "range in go". It will help you in understanding the concepts better.
Code Example 1
nums := []int{2, 3, 4}
sum := 0
for _, num := range nums {
sum += num
}
fmt.Println("sum:", sum)
Code Example 2
for i, num := range nums {
if num == 3 {
fmt.Println("index:", i)
}
}
Code Example 3
kvs := map[string]string{"a": "apple", "b": "banana"}
for k, v := range kvs {
fmt.Printf("%s -> %s\n", k, v)
}
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