search
HomeBackend DevelopmentGolangHow to convert string to byte array (byte) in golang

How to convert string to byte array (byte) in golang

Mar 22, 2023 pm 02:22 PM
golanggo language

Go language is an emerging and efficient programming language that is widely used in various fields, especially server-side development. Among them, string processing is an important part of the Go language. This article will introduce how to convert a string into a byte array (byte), that is, golang string to byte.

  1. What is a byte array?

In the Go language, a byte array (byte) is an array composed of a series of integers. Each integer corresponds to a character, and this character is represented by the character corresponding to the integer in the ASCII code table. Therefore, a byte array can be regarded as an array composed of character encodings, which can be used in various string processing scenarios.

  1. Method to convert string to byte

Go language provides two methods to convert string to byte array: one is through Type conversion is implemented, and the other is implemented through functions in the standard library.

(1) Type conversion method

In Go language, string is an immutable type, which consists of a string of characters. Byte is a variable type, which consists of a series of integers. Therefore, we can convert the string type to the byte type through type conversion, that is:

str := "hello world"
bytes := []byte(str)

In the above code, we first define a string str, and then pass [ ]byte(str) method to convert it into a byte array bytes. It should be noted that the byte array is a mutable type and it can be modified.

(2) Function conversion method

In addition to type conversion, the Go language also provides many standard library functions to convert strings to byte arrays. The most commonly used functions are the []byte and string functions, which can convert strings to byte arrays and byte arrays to strings respectively.

str := "hello world"
bytes := []byte(str)
str2 := string(bytes)

In the above code, we first convert the string str into a byte array bytes, and then pass string(bytes) Way to convert byte array to string str2. It should be noted that this method only works with ASCII encoding. If the string contains other encoded characters, garbled characters may appear.

  1. Conversion application of strings and byte arrays

Converting strings to byte arrays is a basic operation in the Go language , it can not only be used for conversion between strings and byte arrays, but also can be used in various string processing scenarios. Let's take a look at a few common application scenarios:

(1) Byte array split

A byte array can be regarded as a sequence composed of some integers. Therefore, we can split the byte array into multiple small arrays by traversing it:

str := "hello"
bytes := []byte(str)
chunks := [][]byte{}
chunkSize := 2
for i := 0; i  len(bytes) {
        end = len(bytes)
    }
    chunk := bytes[i:end]
    chunks = append(chunks, chunk)
}
fmt.Println(chunks)

In the above code, we define a string str and byte arraybytes, and then split the byte array bytes into small arrays of size 2. Finally, we store all the small arrays in a 2D array chunks and print it out.

(2) Compressed string

We can compress a string into a byte array to achieve compression effect. The principle of compression is to replace the same characters in the string with a count value and a character. For example, the string aaabcc can be compressed into a byte array []byte{3, 97, 1, 98, 2, 99}, which means that there are in the string 3 'a's, 1 'b's and 2 'c's.

str := "aaabcc"
outBytes := []byte{}
currentChar := str[0]
currentCount := 1
for i := 1; i <p>In the above code, we define a string <code>str</code> and an empty byte array <code>outBytes</code>, and then compress the string <code> according to the above compression algorithm str</code> is compressed into byte array<code>outBytes</code>. Finally, we print out the compressed byte array. </p><ol start="4"><li><strong>Summary</strong></li></ol><p>In Go language, converting a string into a byte array is a basic operation, which can be used in various A string processing scenario. In this article, we introduced two methods of converting a string to a byte array: type conversion and function conversion. In addition, we also introduced some application scenarios of byte arrays, such as byte array splitting and string compression. It should be noted that byte arrays are only suitable for ASCII encoding. If the string contains other encoded characters, garbled characters may appear. </p>

The above is the detailed content of How to convert string to byte array (byte) in golang. 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
Understanding Goroutines: A Deep Dive into Go's ConcurrencyUnderstanding Goroutines: A Deep Dive into Go's ConcurrencyMay 01, 2025 am 12:18 AM

GoroutinesarefunctionsormethodsthatrunconcurrentlyinGo,enablingefficientandlightweightconcurrency.1)TheyaremanagedbyGo'sruntimeusingmultiplexing,allowingthousandstorunonfewerOSthreads.2)Goroutinesimproveperformancethrougheasytaskparallelizationandeff

Understanding the init Function in Go: Purpose and UsageUnderstanding the init Function in Go: Purpose and UsageMay 01, 2025 am 12:16 AM

ThepurposeoftheinitfunctioninGoistoinitializevariables,setupconfigurations,orperformnecessarysetupbeforethemainfunctionexecutes.Useinitby:1)Placingitinyourcodetorunautomaticallybeforemain,2)Keepingitshortandfocusedonsimpletasks,3)Consideringusingexpl

Understanding Go Interfaces: A Comprehensive GuideUnderstanding Go Interfaces: A Comprehensive GuideMay 01, 2025 am 12:13 AM

Gointerfacesaremethodsignaturesetsthattypesmustimplement,enablingpolymorphismwithoutinheritanceforcleaner,modularcode.Theyareimplicitlysatisfied,usefulforflexibleAPIsanddecoupling,butrequirecarefulusetoavoidruntimeerrorsandmaintaintypesafety.

Recovering from Panics in Go: When and How to Use recover()Recovering from Panics in Go: When and How to Use recover()May 01, 2025 am 12:04 AM

Use the recover() function in Go to recover from panic. The specific methods are: 1) Use recover() to capture panic in the defer function to avoid program crashes; 2) Record detailed error information for debugging; 3) Decide whether to resume program execution based on the specific situation; 4) Use with caution to avoid affecting performance.

How do you use the "strings" package to manipulate strings in Go?How do you use the "strings" package to manipulate strings in Go?Apr 30, 2025 pm 02:34 PM

The article discusses using Go's "strings" package for string manipulation, detailing common functions and best practices to enhance efficiency and handle Unicode effectively.

How do you use the "crypto" package to perform cryptographic operations in Go?How do you use the "crypto" package to perform cryptographic operations in Go?Apr 30, 2025 pm 02:33 PM

The article details using Go's "crypto" package for cryptographic operations, discussing key generation, management, and best practices for secure implementation.Character count: 159

How do you use the "time" package to handle dates and times in Go?How do you use the "time" package to handle dates and times in Go?Apr 30, 2025 pm 02:32 PM

The article details the use of Go's "time" package for handling dates, times, and time zones, including getting current time, creating specific times, parsing strings, and measuring elapsed time.

How do you use the "reflect" package to inspect the type and value of a variable in Go?How do you use the "reflect" package to inspect the type and value of a variable in Go?Apr 30, 2025 pm 02:29 PM

Article discusses using Go's "reflect" package for variable inspection and modification, highlighting methods and performance considerations.

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

EditPlus Chinese cracked version

EditPlus Chinese cracked version

Small size, syntax highlighting, does not support code prompt function

PhpStorm Mac version

PhpStorm Mac version

The latest (2018.2.1) professional PHP integrated development tool

SecLists

SecLists

SecLists is the ultimate security tester's companion. It is a collection of various types of lists that are frequently used during security assessments, all in one place. SecLists helps make security testing more efficient and productive by conveniently providing all the lists a security tester might need. List types include usernames, passwords, URLs, fuzzing payloads, sensitive data patterns, web shells, and more. The tester can simply pull this repository onto a new test machine and he will have access to every type of list he needs.

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.

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment