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StringUtils 字符串工具扩展：强大的文本处理工具集 · App Inventor 2 中文网
...本填充和居中
字符串缩写
ASCII 码转换
电子邮件和 IP 地址验证
字符串相似度计算（Levenshtein 距离）
三种函数变体
扩展提供三种函数变体以满足不同需求：
变体
说明
示例
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How to convert std::string to LPCSTR?
How can I convert a std::string to LPCSTR ? Also, how can I convert a std::string to LPWSTR ?
9 Answers
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Most efficient way to make the first character of a String lower case?
What is the most efficient way to make the first character of a String lower case?
11 Answers
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Finding index of character in Swift String
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You are not the only one who couldn't find the solution.
String doesn't implement RandomAccessIndexType. Probably because they enable characters with different byte lengths. That's why we have to use string.characters.count (count or countElements in Swift 1.x) to get the number of...
If strings are immutable in .NET, then why does Substring take O(n) time?
Given that strings are immutable in .NET, I'm wondering why they have been designed such that string.Substring() takes O( substring.Length ) time, instead of O(1) ?
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Difference between string and text in rails?
...new web app using Rails, and was wondering, what's the difference between string and text ? And when should each be used?
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How to read the content of a file to a string in C?
...you want to interpret it) to open a file in C and read its contents into a string (char*, char[], whatever)?
11 Answers
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What are the security risks of setting Access-Control-Allow-Origin?
...s answer is not quite correct according to the current CORS standard: "The string '*' cannot be used for a resource that supports credentials." So you cannot force a request to use transient authentication in the form of cookies, cached HTTP authentication or client SSL certificates. However if the ...
Keep-alive header clarification
...ween computer A and server F")?
A TCP connection is recognized by source IP and port and destination IP and port. Your OS, all intermediate session-aware devices and the server's OS will recognize the connection by this.
HTTP works with request-response: client connects to server, performs a requ...
Bytes of a string in Java
In Java, if I have a String x , how can I calculate the number of bytes in that string?
8 Answers
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