Shulou(Shulou.com)06/03 Report--

What is the basic array of Go? I believe many inexperienced people don't know what to do about it. Therefore, this article summarizes the causes and solutions of the problem. Through this article, I hope you can solve this problem.

Array of Go Basics

Array (array)

In Go, an array is determined from the time it is declared, and its members can be modified when it is used, but the size of the array is immutable.

Var array variable name [number of elements] T

/ / define an array of length 3 elements of type int a

Vara [3] int

The length of the array must be constant and the length must be part of the array type. Once defined, the length cannot be changed. Int and [5] int are different types.

The array can be accessed through the subscript, starting with 0, and the last element subscript is: len-1. If the access is out of bounds (the subscript is outside the legal range), the access will be panic.

Initialization of array

Mode one

You can use the initialization list to set the value of an array element when initializing an array

Funcmain () {

VarArray1 [3] int

VarArray2= [3] int {1,2}

VarArray3= [3] string {"Beijing", "Shanghai", "Guangzhou"}

Fmt.Println (Array1)

Fmt.Println (Array2)

Fmt.Println (Array3)

}

/ / [000]

/ / [120]

/ / [Beijing, Shanghai and Guangzhou]

Mode two

Follow the above method to make sure that the initial value provided is consistent with the length of the array each time. In general, we can let the compiler infer the length of the array based on the number of initial values.

Funcmain () {

VarArray1 [3] int

VarArray2= [...] int {1,2}

VarArray3= [...] string {"Beijing", "Shanghai", "Guangzhou"}

Fmt.Println (Array1)

Fmt.Println (Array2)

Fmt.Printf ("typeofArray2:%T\ n", Array2)

Fmt.Println (Array3)

Fmt.Printf ("typeofArray3:%T\ n", Array3)

}

/ / [000]

/ / [12]

/ / typeofArray2: [2] int

/ / [Beijing, Shanghai and Guangzhou]

/ / typeofArray3: [3] string

Mode 3

Initializes the array by specifying an index value

Funcmain () {

AVOR = [...] int {1DV 1JI 3JR 5}

Fmt.Println (a)

Fmt.Printf ("typeofa:%T\ n", a)

}

/ / [0105]

/ / typeofa: [4] int

Traversal of array

Funcmain () {

A string = [...] Beijing, Shanghai, Guangzhou}

/ / method 1: for loop traversal

Fori:=0;i

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