Take a typical check for bit-flags: if (v & (1 << 0)) != 0 { foo(); } else if (v & (1 << 1)) != 0 { bar(); } else if (v & (1 << 2)) != 0 { baz(); } How would this b...

Consider this class: public class MyClassOfMystery { public static final int NO_FLAGS = ~0; public static final int FIRST_FLAG = 1; public static final int SECOND_FLAG = 1 << 1; public ...

I am dealing with file status flags. Among test I performed, I found #include <stdio.h> #include "fcntl.h" int main() { const int flag = O_RDONLY; printf( "*** Flag O_RDONLY = %5d\n", fla...

What does applying [Flags] really do? I know it modifies the behavior of Enum.ToString, but does it do anything else? (e.g. Different compiler or runtime behavior, etc.) Edit: Yeah, I'm aware t...

I'm a Rust beginner which comes from C/C++. To start off I tried to create a simple "Hello-World" like program for Microsoft Windows using user32.MessageBox where I stumbled upon a proble...

I am trying to decode a bitmask [Flags] public enum Amenities { BusinessCenter = 1, FitnessCenter = 2, HotTub = 4, InternetAccess = 8, KidsActivities = 16, Kitchen = 32, PetsAllowed = 64, ...

I'm porting some imperative code to Haskell. My goal is to analyze an executable, therefore each byte of the text section gets assigned a number of flags, which would all fit in a byte (6 bits to b...

Currently I'm using enums to represent a state in a little game experiment. I declare them like so: namespace State { enum Value { MoveUp = 1 << 0, // 00001 == 1 MoveDown = 1 << 1, ...

I have a data model with a bitfield defined something like this: alter table MemberFlags add column title varchar(50) not null default ''; alter table MemberFlags add column value integer( 3) not ...

Suppose, for the sake of this example, that I am trying to parse a file which specifies that two arbitrary bytes in the record represent the day of the week, thusly: DayOfWeek: - 0 = Monday - 1...

I have a byte I'm using for bitflags. I know that one and only one bit in the byte is set at any give time. Ex: unsigned char b = 0x20; //(00100000) 6th most bit set I currently use the followin...

While revising some old c++ code, I ran across several bitflags defined as enums. enum FooFlags { FooFlag1 = 1 << 0, FooFlag2 = 1 << 1, FooFlag3 = 1 << 2 // etc... }; This ...

Possible Duplicate: C# int to enum conversion Is it somehow possible to convert an int to a flag combination enum? So, if [Flags] public enum Foo {a = 0x80, b = 0x40, c = ..., ......

I like to write enum or integer to pass option to my methods. Is there a pattern or a method in C# to check if an (int 1,2,4,8,...) option is true or false. I think it should easily be possible via...

I made a function to set or clear a specific number of bits in a DWORD. My function works. I don't need help making it work. However, I am wondering if the method I've chosen to do it is the fastes...

I've seen some possible approaches (in some database engines some of them are synonyms): TINYINT(1) BOOL BIT(1) ENUM(0,1) CHAR(0) NULL All major database engine supported by PHP should be noted...

I am attempting to learn more about this to implement in my project. I currently have got this basically: unsigned char flags = 0; //8 bits flags |= 0x2; //apply random flag if(flags & 0x2)...

Was looking at how enums can be used as bit flags by decorating them with the flags attribute and bitwize operators (see below). Are there any places in the .NET framework that this pattern is use...

Edit: It seems most people misunderstood my question. I know how enum works, and I know binary. I'm wondering why the enums with the [Flags] attribute is designed the way it is. Original post: T...

Using enums for storing bitflags in C++ is a bit troublesome, since once the enum values are ORed they loose their enum-type, which causes errors without explicit casting. The accepted answer for ...