Differences between string operations in different languages ​​and Go language string operations

Characteristics of Go language string operations: UTF-8 encoding is used to represent strings. Operators are used to splice strings using []. Operators are used to index strings [start:end]. Syntax is used to slice strings. == operators are used to compare characters. String

String operation - Go language vs. other languages

Preface

Processing strings is one of the basic operations in programming . There are subtle differences in the way string operations are performed in different programming languages. This article will explore the differences between string operations in Go and other popular languages ​​such as Python, Java, and C.

String representation

Language	String representation
Python	Unicode sequence
Java	UTF-16 sequence
C	8-bit char array
Go	UTF-8 sequence

The Go language uses UTF- 8 encoding to represent strings, which is the same as Python, but different from Java and C.

String concatenation

Language	String concatenation
Python
Java
C	strcat()
Go

In the Go language, you can use operators to splice strings. Unlike other languages ​​that use specialized functions or methods, the Go language provides a concise syntax.

String Index

##JavacharAt()C []Go[]##In Go language, it can be used like an array [] operator to index strings. This method is similar to how it is used in Python and C, but in Java you need to use the charAt() method.

Language	String Index
Python	[]

String Slicing

LanguagePythonJavaC GoIn Go language String slicing is used in the same way as in other languages. The [start:end] syntax allows getting a specified range of characters in a string.

String Slicing
[start:end]
substring()
substr()
[start:end]

String comparison

LanguagePython##Javaequals()C strcmp()Go#==In the Go language, use the == operation Compare strings. Other languages ​​also provide similar comparison functions or methods.

String comparison
==

Practical Case

Consider a program that needs to convert a user-entered string to uppercase:

Python

user_input = input("Enter a string: ")
converted_string = user_input.upper()
print(converted_string)

Java

import java.util.Scanner;

public class StringConverter {

    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        System.out.println("Enter a string: ");
        String user_input = scanner.nextLine();
        String converted_string = user_input.toUpperCase();
        System.out.println(converted_string);
    }
}

C

#include <iostream>
#include <string>

using namespace std;

int main() {
    string user_input;
    cout << "Enter a string: ";
    getline(cin, user_input);
    transform(user_input.begin(), user_input.end(), user_input.begin(), ::toupper);
    cout << user_input << endl;
    return 0;
}

Go

package main

import "fmt"

func main() {
    var user_input string
    fmt.Println("Enter a string: ")
    fmt.Scanln(&user_input)
    converted_string := strings.ToUpper(user_input)
    fmt.Println(converted_string)
}

These examples show handling characters in different languages String similarities and differences. I hope this article can help you better understand string operations in Go language.

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