Appending elements to slices in Golang
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package main | |
import "fmt" | |
func main() { | |
var names []string /* Zero value of a slice is nil */ | |
fmt.Println(names, len(names), cap(names)) /* Returns [] 0 0 */ | |
names = append(names, "John", "Bill", "Steve") | |
fmt.Println(names, len(names), cap(names)) /* Returns [John Bill Steve] 3 3 */ | |
vegies := [...]string{"Potato", "Tomato", "Eggplant", "Onion", "Capsicum"} | |
vegslice := vegies[1:3] | |
/* Returns [Tomato Eggplant] 2 4 */ | |
fmt.Println(vegslice, len(vegslice), cap(vegslice)) | |
vegslice = append(vegslice, "Okra", "Cabbage") | |
/* Returns [Tomato Eggplant Okra Cabbage] 4 4 */ | |
fmt.Println(vegslice, len(vegslice), cap(vegslice)) | |
vegslice = append(vegslice, "Lettuce", "Bottlegaurd") | |
/* Returns [Tomato Eggplant Okra Cabbage Lettuce Bottlegaurd] 6 8 */ | |
fmt.Println(vegslice, len(vegslice), cap(vegslice)) | |
} |
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