除了Python和JavaScript，还有哪些编程语言提供计算字符串长度的功能？

许多编程语言都支持计算字符串长度，以下是几个常见的示例：

1. Java:

   String str = "Hello, World!";
   int length = str.length();
   System.out.println("The length of the string is: " + length);

2. C#:

   string str = "Hello, World!";
   int length = str.Length;
   Console.WriteLine($"The length of the string is: {length}");

3. PHP:

   $str = "Hello, World!";
   $length = strlen($str);
   echo "The length of the string is: " . $length;

4. Ruby:

   str = "Hello, World!"
   length = str.length
   puts "The length of the string is: #{length}"

5. Swift (Objective-C):

   let str = "Hello, World!"
   let length = str.count
   print("The length of the string is: \(length)")

6. Go:

   package main
   import (
       "fmt"
       "strings"
   )
   func main() {
       str := "Hello, World!"
       length := strings.Count(str, "")
       fmt.Println("The length of the string is:", length)
   }

每种语言都有其特定的方式来计算字符串长度，基本原理都是遍历并计数字符。