"golang array" Code Answer's
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golang array syntax
var arr1 [3]int //ARRAY syntax#1
arr2 := [2]string{"Hello", "World"} //ARRAY syntax#2 (composite literal)(identifier:= type{values})
arr3 := [...]int{12, 13, 14, 15, 16} //ARRAY syntax#3
arr4 := [5][2]int{{0, 0}, {1, 2}, {2, 4}, {3, 6}, {4, 8}} //ARRAY syntax#4
var arr5 [4][3]int //ARRAY syntax#4.1
arr5[0] = [3]int{1, 2, 3}
arr5[1] = [3]int{4, 5, 6}
arr5[2] = [3]int{7, 8, 9}
fmt.Println(arr1, arr2, arr3, arr4, arr5)
how to get the length of an array in go
array:=[]int {1,2,3,4}
len(array)
go arrays
var a [10]int // declare an int array with length 10. Array length is part of the type!
a[3] = 42 // set elements
i := a[3] // read elements
// declare and initialize
var a = [2]int{1, 2}
a := [2]int{1, 2} //shorthand
a := [...]int{1, 2} // elipsis -> Compiler figures out array length
go slice
// loop over an array/a slice
for i, e := range a {
// i is the index, e the element
}
// if you only need e:
for _, e := range a {
// e is the element
}
// ...and if you only need the index
for i := range a {
}
// In Go pre-1.4, you'll get a compiler error if you're not using i and e.
// Go 1.4 introduced a variable-free form, so that you can do this
for range time.Tick(time.Second) {
// do it once a sec
}
golang array
package main
import (
"fmt"
)
func main() {
// array with not range maximal capacity
arrayNotMax := [...]int{1991, 1992, 1993, 1994, 1995}
// array with range maximal capacity
var arrayMax [3]int
arrayMax[0] = 1990
arrayMax[1] = 1991
arrayMax[2] = 1992
// array using make method
var arrayWithMake = make([]string, 3)
arrayWithMake[0] = "zero"
arrayWithMake[1] = "one"
arrayWithMake[2] = "two"
// array multi dimension
var arrayMultiDimension = [2][5]int{{1, 2, 3, 4, 5}, {6, 7, 8, 9, 10}}
fmt.Printf("read arrayNotMax value %#v \n", arrayNotMax)
fmt.Printf("read arrayMax value %#v \n", arrayMax)
fmt.Printf("read arrayWithMake value %#v \n", arrayWithMake)
fmt.Println("read length of array", len(arrayNotMax))
fmt.Println("read capacity of array", cap(arrayNotMax))
fmt.Println("read arrayMultiDimension value", arrayMultiDimension)
}
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