8. Arrays, Go - rextester

Language: Layout:

//https://gobyexample.com/

// In Go, an _array_ is a numbered sequence of elements of a
// specific length.

package main

import "fmt"

func main() {

// Here we create an array `a` that will hold exactly
    // 5 `int`s. The type of elements and length are both
    // part of the array's type. By default an array is
    // zero-valued, which for `int`s means `0`s.
    var a [5]int
    fmt.Println("emp:", a)

// We can set a value at an index using the
    // `array[index] = value` syntax, and get a value with
    // `array[index]`.
    a[4] = 100
    fmt.Println("set:", a)
    fmt.Println("get:", a[4])

// The builtin `len` returns the length of an array.
    fmt.Println("len:", len(a))

// Use this syntax to declare and initialize an array
    // in one line.
    b := [5]int{1, 2, 3, 4, 5}
    fmt.Println("dcl:", b)

// Array types are one-dimensional, but you can
    // compose types to build multi-dimensional data
    // structures.
    var twoD [2][3]int
    for i := 0; i < 2; i++ {
        for j := 0; j < 3; j++ {
            twoD[i][j] = i + j
        }
    }
    fmt.Println("2d: ", twoD)
}

Show compiler warnings [ + ] Compiler args [ + ] Show input
Compilation time: 0.34 sec, absolute running time: 0.14 sec, cpu time: 0 sec, memory peak: 3 Mb, absolute service time: 0.49 sec