search
HomeBackend DevelopmentGolangUse the ioutil.ReadFile function to read the file content and return a string and a list of file information objects

Use the ioutil.ReadFile function to read the file content and return a string and a list of file information objects

Jul 24, 2023 am 11:14 AM
File information object listioutilreadfile filereturn string

Use the ioutil.ReadFile function to read the file content and return a string and file information object list

In the Go language, we can use the ioutil.ReadFile function to read the file content. This function returns a byte array of the file contents. This function is very convenient, but may have some performance issues, especially when the file is large. If we want to obtain file information (such as file name, size, modification time, etc.) at the same time, we can use the os.Stat function to obtain the file information object.

The following is a sample code that demonstrates how to use the ioutil.ReadFile function to read the file content and return a list containing file information objects:

package main

import (
    "fmt"
    "io/ioutil"
    "log"
    "os"
)

func main() {
    files, err := ioutil.ReadDir("/path/to/directory")
    if err != nil {
        log.Fatal(err)
    }

    for _, file := range files {
        if !file.IsDir() {
            fileContent, err := ioutil.ReadFile(file.Name())
            if err != nil {
                log.Fatal(err)
            }

            fmt.Printf("文件名:%s
", file.Name())
            fmt.Printf("文件大小:%d 字节
", file.Size())
            fmt.Printf("修改时间:%s
", file.ModTime().String())
            fmt.Printf("文件内容:%s
", string(fileContent))
            fmt.Println("--------------")
        }
    }
}

In the above code, we first use The ioutil.ReadDir function reads files and directories in the specified directory and returns a list of file information objects. Then, we traverse the file information object list, and for each non-directory file, we use the ioutil.ReadFile function to read the file content, and print the file information and content through the fmt.Printf function.

It should be noted that "/path/to/directory" in the above example code should be replaced with the specific directory path. In addition, some error handling code may need to be added to the code to handle possible errors.

By using the ioutil.ReadFile function, we can easily read the contents of the file; and by using the os.Stat function, we can obtain the file information at the same time. The combination of the two can help us better handle the needs of file reading and information acquisition. I hope the sample code in this article can be helpful to you.

The above is the detailed content of Use the ioutil.ReadFile function to read the file content and return a string and a list of file information objects. For more information, please follow other related articles on the PHP Chinese website!

Statement
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
Choosing Between Golang and Python: The Right Fit for Your ProjectChoosing Between Golang and Python: The Right Fit for Your ProjectApr 19, 2025 am 12:21 AM

Golangisidealforperformance-criticalapplicationsandconcurrentprogramming,whilePythonexcelsindatascience,rapidprototyping,andversatility.1)Forhigh-performanceneeds,chooseGolangduetoitsefficiencyandconcurrencyfeatures.2)Fordata-drivenprojects,Pythonisp

Golang: Concurrency and Performance in ActionGolang: Concurrency and Performance in ActionApr 19, 2025 am 12:20 AM

Golang achieves efficient concurrency through goroutine and channel: 1.goroutine is a lightweight thread, started with the go keyword; 2.channel is used for secure communication between goroutines to avoid race conditions; 3. The usage example shows basic and advanced usage; 4. Common errors include deadlocks and data competition, which can be detected by gorun-race; 5. Performance optimization suggests reducing the use of channel, reasonably setting the number of goroutines, and using sync.Pool to manage memory.

Golang vs. Python: Which Language Should You Learn?Golang vs. Python: Which Language Should You Learn?Apr 19, 2025 am 12:20 AM

Golang is more suitable for system programming and high concurrency applications, while Python is more suitable for data science and rapid development. 1) Golang is developed by Google, statically typing, emphasizing simplicity and efficiency, and is suitable for high concurrency scenarios. 2) Python is created by Guidovan Rossum, dynamically typed, concise syntax, wide application, suitable for beginners and data processing.

Golang vs. Python: Performance and ScalabilityGolang vs. Python: Performance and ScalabilityApr 19, 2025 am 12:18 AM

Golang is better than Python in terms of performance and scalability. 1) Golang's compilation-type characteristics and efficient concurrency model make it perform well in high concurrency scenarios. 2) Python, as an interpreted language, executes slowly, but can optimize performance through tools such as Cython.

Golang vs. Other Languages: A ComparisonGolang vs. Other Languages: A ComparisonApr 19, 2025 am 12:11 AM

Go language has unique advantages in concurrent programming, performance, learning curve, etc.: 1. Concurrent programming is realized through goroutine and channel, which is lightweight and efficient. 2. The compilation speed is fast and the operation performance is close to that of C language. 3. The grammar is concise, the learning curve is smooth, and the ecosystem is rich.

Golang and Python: Understanding the DifferencesGolang and Python: Understanding the DifferencesApr 18, 2025 am 12:21 AM

The main differences between Golang and Python are concurrency models, type systems, performance and execution speed. 1. Golang uses the CSP model, which is suitable for high concurrent tasks; Python relies on multi-threading and GIL, which is suitable for I/O-intensive tasks. 2. Golang is a static type, and Python is a dynamic type. 3. Golang compiled language execution speed is fast, and Python interpreted language development is fast.

Golang vs. C  : Assessing the Speed DifferenceGolang vs. C : Assessing the Speed DifferenceApr 18, 2025 am 12:20 AM

Golang is usually slower than C, but Golang has more advantages in concurrent programming and development efficiency: 1) Golang's garbage collection and concurrency model makes it perform well in high concurrency scenarios; 2) C obtains higher performance through manual memory management and hardware optimization, but has higher development complexity.

Golang: A Key Language for Cloud Computing and DevOpsGolang: A Key Language for Cloud Computing and DevOpsApr 18, 2025 am 12:18 AM

Golang is widely used in cloud computing and DevOps, and its advantages lie in simplicity, efficiency and concurrent programming capabilities. 1) In cloud computing, Golang efficiently handles concurrent requests through goroutine and channel mechanisms. 2) In DevOps, Golang's fast compilation and cross-platform features make it the first choice for automation tools.

See all articles

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

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

Safe Exam Browser

Safe Exam Browser

Safe Exam Browser is a secure browser environment for taking online exams securely. This software turns any computer into a secure workstation. It controls access to any utility and prevents students from using unauthorized resources.

SAP NetWeaver Server Adapter for Eclipse

SAP NetWeaver Server Adapter for Eclipse

Integrate Eclipse with SAP NetWeaver application server.

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Atom editor mac version download

Atom editor mac version download

The most popular open source editor