[ACCEPTED]-What does | (pipe) mean in c#?-c#

Accepted answer

Score: 18

For an enum marked with the [Flags] attribute 5 the vertical bar means 'and', i.e. add the 4 given values together.

Edit: This is a bitwise 3 'or' (though semantically 'and'), e.g.:

[Flags]
public enum Days
{
     Sunday    = 0x01,
     Monday    = 0x02,
     Tuesday   = 0x04,
     Wednesday = 0x08,
     Thursday  = 0x10,
     Friday    = 0x20,
     Saturday  =  0x40,
}

// equals = 2 + 4 + 8 + 16 + 32 = 62
Days weekdays = Days.Monday | Days.Tuesday | Days.Wednesday | Days.Thursday | Days.Friday;

It's 2 a bitwise-OR but semantically you think 1 of it as an AND!

Score: 11

It is normally a bitwise or operator. In this context, it's 1 used on an enum with the flags attribute set.

Score: 3

It's a bitwise OR of two values, presumably 2 it creates a FileAccessRule with both FullAccess 1 and Modify permissions set.

Score: 3

It's a binary operator:

Binary | operators are predefined 6 for the integral types and bool. For integral 5 types, | computes the bitwise OR of its 4 operands. For bool operands, | computes 3 the logical OR of its operands; that is, the 2 result is false if and only if both its 1 operands are false.

Score: 3

I'm assuming you mean this: FileSystemRights.FullControl | FileSystemRights.Modify

This FileSystemRights, is 13 an enum with FullControl and Modify having 12 their own numeric values.

So if FullControl 11 = 1 and Modify = 2,

FileSystemRights.FullControl | FileSystemRights.Modify = 3.  
00000001 | 00000010 = 00000011.

Each bit is a "flag" for 10 the method. The input checks to see which 9 "flag" is set and what to do.

So 8 in this example, position 1 (the digit all 7 the way on the right in this case) is FullControl, and 6 position 2 is Modify. The method looks 5 at each of the positions, and changes it 4 behavior. Using flags is a way of passing 3 in multiple parameters of behaviors without 2 having to create a parameter for each possiblity 1 (e.g. bool allowFullControl, bool allowModify) etc.

Bitwise Operator

Score: 1

It's a boolean or. FullControl and Modify 3 represent bits in a mask. For example 0001 2 and 0101. If you would combine those via 1 pipe, you would get 0101.

Source: stackoverflow.com

[ACCEPTED]-What does | (pipe) mean in c#?-c#

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