Home Backend Development Golang In-depth understanding of different data types in Go language

In-depth understanding of different data types in Go language

Jan 13, 2024 pm 01:18 PM

In-depth understanding of different data types in Go language

To understand the different data types in Go language, you need specific code examples

As a statically typed programming language, Go language has rich data types, including basic Data types and composite data types. Mastering the characteristics and usage of different data types is crucial to writing efficient and accurate programs. The following will introduce several common data types in Go language with specific code examples.

  1. Basic data types:
    Go language provides some basic data types, including integer, floating point, Boolean and string types.

Integer type:

package main

import "fmt"

func main() {
    var a int = 10
    fmt.Printf("整型变量a的值为:%d
", a)

    // 其他整型类型
    var b int8 = 127
    var c int16 = 32767
    var d int32 = 2147483647
    var e int64 = 9223372036854775807
    fmt.Printf("整型变量b的值为:%d
", b)
    fmt.Printf("整型变量c的值为:%d
", c)
    fmt.Printf("整型变量d的值为:%d
", d)
    fmt.Printf("整型变量e的值为:%d
", e)
}
Copy after login

Floating point type:

package main

import "fmt"

func main() {
    var f1 float32 = 3.14159
    var f2 float64 = 3.1415926535897932384626433
    fmt.Printf("浮点型变量f1的值为:%f
", f1)
    fmt.Printf("浮点型变量f2的值为:%f
", f2)
}
Copy after login

Boolean type:

package main

import "fmt"

func main() {
    var b1 bool = true
    var b2 bool = false
    fmt.Printf("布尔型变量b1的值为:%t
", b1)
    fmt.Printf("布尔型变量b2的值为:%t
", b2)
}
Copy after login

String type:

package main

import "fmt"

func main() {
    var str1 string = "Hello, Go"
    str2 := "Hello, 世界"
    fmt.Printf("字符串str1的值为:%s
", str1)
    fmt.Printf("字符串str2的值为:%s
", str2)
}
Copy after login
  1. Composite data types
    In addition to basic data types, the Go language also provides some composite data types, including arrays, slices, dictionaries, and structures.

Array:

package main

import "fmt"

func main() {
    var arr [5]int
    arr[0] = 10
    arr[1] = 20
    arr[2] = 30
    arr[3] = 40
    arr[4] = 50
    fmt.Println("数组arr的值为:", arr)
}
Copy after login

Slice:

package main

import "fmt"

func main() {
    var slice []int
    slice = make([]int, 5)
    slice[0] = 10
    slice[1] = 20
    slice[2] = 30
    slice[3] = 40
    slice[4] = 50
    fmt.Println("切片slice的值为:", slice)
}
Copy after login

Dictionary:

package main

import "fmt"

func main() {
    var dict map[string]int
    dict = make(map[string]int)
    dict["a"] = 10
    dict["b"] = 20
    dict["c"] = 30
    fmt.Println("字典dict的值为:", dict)
}
Copy after login

Structure:

package main

import "fmt"

type Person struct {
    Name string
    Age  int
}

func main() {
    var p1 Person
    p1.Name = "Tom"
    p1.Age = 18
    fmt.Printf("结构体p1的值为:%v
", p1)
}
Copy after login

These code examples cover Learn about several common data types in Go language and how to use them. By understanding and mastering these data types, I believe readers can write Go programs more effectively. Of course, the Go language also provides other rich data types, and readers can consult relevant materials for in-depth study.

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

Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

What are the vulnerabilities of Debian OpenSSL What are the vulnerabilities of Debian OpenSSL Apr 02, 2025 am 07:30 AM

OpenSSL, as an open source library widely used in secure communications, provides encryption algorithms, keys and certificate management functions. However, there are some known security vulnerabilities in its historical version, some of which are extremely harmful. This article will focus on common vulnerabilities and response measures for OpenSSL in Debian systems. DebianOpenSSL known vulnerabilities: OpenSSL has experienced several serious vulnerabilities, such as: Heart Bleeding Vulnerability (CVE-2014-0160): This vulnerability affects OpenSSL 1.0.1 to 1.0.1f and 1.0.2 to 1.0.2 beta versions. An attacker can use this vulnerability to unauthorized read sensitive information on the server, including encryption keys, etc.

What libraries are used for floating point number operations in Go? What libraries are used for floating point number operations in Go? Apr 02, 2025 pm 02:06 PM

The library used for floating-point number operation in Go language introduces how to ensure the accuracy is...

What is the problem with Queue thread in Go's crawler Colly? What is the problem with Queue thread in Go's crawler Colly? Apr 02, 2025 pm 02:09 PM

Queue threading problem in Go crawler Colly explores the problem of using the Colly crawler library in Go language, developers often encounter problems with threads and request queues. �...

PostgreSQL monitoring method under Debian PostgreSQL monitoring method under Debian Apr 02, 2025 am 07:27 AM

This article introduces a variety of methods and tools to monitor PostgreSQL databases under the Debian system, helping you to fully grasp database performance monitoring. 1. Use PostgreSQL to build-in monitoring view PostgreSQL itself provides multiple views for monitoring database activities: pg_stat_activity: displays database activities in real time, including connections, queries, transactions and other information. pg_stat_replication: Monitors replication status, especially suitable for stream replication clusters. pg_stat_database: Provides database statistics, such as database size, transaction commit/rollback times and other key indicators. 2. Use log analysis tool pgBadg

Transforming from front-end to back-end development, is it more promising to learn Java or Golang? Transforming from front-end to back-end development, is it more promising to learn Java or Golang? Apr 02, 2025 am 09:12 AM

Backend learning path: The exploration journey from front-end to back-end As a back-end beginner who transforms from front-end development, you already have the foundation of nodejs,...

How to solve the user_id type conversion problem when using Redis Stream to implement message queues in Go language? How to solve the user_id type conversion problem when using Redis Stream to implement message queues in Go language? Apr 02, 2025 pm 04:54 PM

The problem of using RedisStream to implement message queues in Go language is using Go language and Redis...

In Go, why does printing strings with Println and string() functions have different effects? In Go, why does printing strings with Println and string() functions have different effects? Apr 02, 2025 pm 02:03 PM

The difference between string printing in Go language: The difference in the effect of using Println and string() functions is in Go...

How to specify the database associated with the model in Beego ORM? How to specify the database associated with the model in Beego ORM? Apr 02, 2025 pm 03:54 PM

Under the BeegoORM framework, how to specify the database associated with the model? Many Beego projects require multiple databases to be operated simultaneously. When using Beego...

See all articles