In-depth exploration of data types in Go language

In-depth understanding of the data types of Go language requires specific code examples

Go language is a statically typed language with rich data types, including basic data types and Composite data type. In this article, we will take an in-depth look at Go data types and provide specific code examples.

1. Basic data types

The basic data types of Go language include integer type, floating point type, complex number type, Boolean type and string type. The following are some commonly used data types and their sample codes:

Integer type:

var a int = 10        // 10进制整数
var b int = 0x16      // 16进制整数
var c int = 0b1010    // 二进制整数
var d int = 0o12      // 八进制整数

Floating point type:

var a float32 = 3.14    // 单精度浮点数
var b float64 = 3.14159 // 双精度浮点数

Complex type:

var a complex64 = 2 + 3i    // 复数类型，由float32构成
var b complex128 = 3 + 4i   // 复数类型，由float64构成

Boolean Type:

var a bool = true    // 布尔类型，取值为true或false
var b bool = false

String type:

var a string = "Hello, World!"    // 字符串类型
var b string = `这是一个多行字符串
可以包含换行和特殊字符`

2. Composite data type

The composite data types of Go language include array types, slice types, and mapping types and structure types. The following are some commonly used composite data types and their sample codes:

Array type:

var a [5]int     // 定义一个长度为5的整型数组
a[0] = 10        // 通过索引赋值
a[1] = 20
fmt.Println(a)  // 输出 [10 20 0 0 0]

var b = [5]int{1, 2, 3, 4, 5}   // 定义并初始化一个数组

Slice type:

var a []int             // 定义一个整型切片
a = append(a, 1, 2, 3)   // 使用append函数向切片中添加元素

var b = []int{1, 2, 3}   // 定义并初始化一个切片

Mapping type:

var a map[string]int            // 定义一个映射类型
a = make(map[string]int)       // 使用make函数创建一个映射

var b = map[string]int{        // 定义并初始化一个映射
    "a": 1,
    "b": 2,
    "c": 3,
}

Structure Body type:

type Person struct {    // 定义一个结构体类型
    Name   string
    Age    int
    Gender string
}

var p1 Person    // 定义一个结构体变量
p1.Name = "Alice"
p1.Age = 20
p1.Gender = "Female"

var p2 = Person{    // 定义并初始化一个结构体变量
    Name:   "Bob",
    Age:    30,
    Gender: "Male",
}

The above are the common basic data types and composite data types in Go language. You can understand their use more intuitively through code examples. To deeply understand the data types of Go language, you need to continue to practice and explore, and make full use of the powerful type system of Go language to build efficient and reliable programs.

The above is the detailed content of In-depth exploration of data types in Go language. For more information, please follow other related articles on the PHP Chinese website!