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Example demonstrates usage of for loop in go. Click here to learn more
func main() {
// Variation #1
var indexA int = 1
for indexA <= 50 {
fmt.Println(indexA)
indexA++
}
// Variation #2
for indexB := 51; indexB <= 100; indexB++ {
fmt.Println(indexB)
}
// Variation #3 Iterating over array
var numbers [5]int
numbers[0] = 0
numbers[1] = 1
numbers[2] = 2
numbers[3] = 3
numbers[4] = 4
for index, number := range numbers {
fmt.Printf("Number at index [%d] is %d", index, number)
fmt.Println()
}
// In case if we don't require index then we can use '_' as
// placeholder for it
for _, number := range numbers {
fmt.Println(number)
}
//Special case iterating over Map
//Special case when accessing a key from Map
//which is not present in Map
alphabets := make(map[string]string)
alphabets["A"] = "Apple"
alphabets["B"] = "Ball"
for key, value := range alphabets {
fmt.Println(key, value)
}
}
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Number at index [0] is 0
Number at index [1] is 1
Number at index [2] is 2
Number at index [3] is 3
Number at index [4] is 4
0
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4
A Apple
B Ball
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