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The ' |= ' symbol is the bitwise OR assignment operator.
In mathematics, the tilde often represents approximation, especially when used in duplicate, and is sometimes called the "equivalency sign." In regular expressions, the tilde is used as an operator in pattern matching, and in C programming, it is used as a bitwise operator representing a unary negation (i.e., "bitwise ...
C operators are one of the features in C which has symbols that can be used to perform mathematical, relational, bitwise, conditional, or logical manipulations. The C programming language has a lot of built-in operators to perform various tasks as per the need of the program.
In C/C++, the # sign marks preprocessor directives. If you're not familiar with the preprocessor, it works as part of the compilation process, handling includes, macros, and more.
\n is Unix, \r is Mac, \r\n is Windows.
Sometimes it's giving trouble especially when running code cross platform. You can bypass this by using Environment.NewLine.
Please refer to What is the difference between \r, \n and \r\n ?! for more information. Happy reading
The Difference
There are a few characters which can indicate a new line. The usual ones are these two:
* '\n' or '0x0A' (10 in decimal) -> This character is called "Line Feed" (LF).
* '\r' or '0x0D' (13 in decimal) -> This one is called "Carriage return" (CR).
Different Operating Systems handle newlines in a different way. Here is a short list of the most common ones:
* DOS and Windows
They expect a newline to be the combination of two characters, namely '\r\n' (or 13 followed by 10).
* Unix (and hence Linux as well)
Unix uses a single '\n' to indicate a new line.
* Mac
Macs use a single '\r'.
Taken from Here
"\n" is just a line feed (Unicode U+000A). This is typically the Unix line separator.
"\r\n" is a carriage return (Unicode U+000D) followed by a line feed (Unicode U+000A). This is typically the Windows line separator.
\n = LF (Line Feed) // Used as a new line character on Unix
\r = CR (Carriage Return) // Used as a new line character on Mac
\r\n = CR + LF // Used as a new line character on Windows
(char)13 = \r = CR
Environment.NewLine = any of the above code based on the operating system
// .NET provides the Environment class which provides many data based on operating systems, so if the application is built on Windows, and you use CR + LF ("\n\r" instead of Environment.NewLine) as the new line character in your strings, and then Microsoft creates a VM for running .NET applications in Unix, then there will be problem. So, you should always use Environment.NewLine when you want a new line character. Now you need not to care about the operating system.
Basically comes down to Windows standard: \r\n and Unix based systems using: \n
http://en.wikipedia.org/wiki/Newline
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