escaping

I found this website with escape codes and I'm just wondering if someone has done this already so I don't have to spend couple of hours building this logic: StringBuffer sb = new StringBuffer(); int n = s.length(); for (int i = 0; i < n; i++) { char c = s.charAt(i); switch (c) { case '\u25CF': sb.append("●"); break; case '\u25BA': sb.append("►"); break; /* ... the rest of the hex chars literals to HTML entities */ default: sb.append(c); break; } } These "codes" is a mere decimal representation of the unicode value of the actual character. It seems to me that something like this would work,

Why do we need an escape character for single quoted string, but not for a double quoted string? a = 'hello how\'s it going' a1 = 'hello how's it going' b = "hello how's it going" assert(a==b) # Passes assert(a1==b) # Errors The error message: File "string.py", line 1 a = 'hello how's it going' ^ SyntaxError: invalid syntax It doesn't matter if you use ' or " around the string to mark it as string literal. But you can't use that character inside the string literal without escaping it using a \ in front of it - otherwise Python interprets it as the end of the string. For example " inside a "

This question already has an answer here: Regex expression to match whole word ? 1 answer I was going through this question C#, Regex.Match whole words It says for match whole word use "\bpattern\b" This works fine for match whole word without any special characters since it is meant for word characters only! I need an expression to match words with special characters also. My code is as follows class Program { static void Main(string[] args) { string str = Regex.Escape("Hi temp% dkfsfdf hi"); string pattern = Regex.Escape("temp%"); var matches = Regex.Matches(str, "\\b" + pattern + "\\b" ,

For instance, I write a normal string and another "abnormal" string like this: Now I debug it, finding that in the debug tool, the "abnormal" string will be shown like this: Here's the question: Why does PyCharm show double backslashes instead of a single backslash? As is known to all, \' means ' . Is there any trick? What I believe is happening is the ' in your c variable string needs to be escaped and PyCharm knows this at runtime, given you have surrounded the full string in " (You'll notice in the debugger, your c string is now surrounded by ' ). To escape the single quote it changes it to

I'm getting from server data using signal and slot. Here is slot part: QString text(this->reply->readAll()); Problem is, that in text variable will be unicode escape, for example: \u043d\u0435 \u043f\u0430\u0440\u044c\u0441\u044f ;-) Is there any way to convert this? Adam W Did you try: QString text = QString::fromUtf8(this->reply->readAll()); http://doc.qt.io/qt-5/qstring.html#fromUtf8 Assuming it's Utf8, otherwise use fromUtf16 I think this is what you needed: (Find occurrences of \uCCCC using regex and replace them by the QChar with unicode number CCCC in base 16) QRegExp rx("(\\\\u[0-9a-fA