I’m trying to write a script that will check two error flags, and in case one flag (or both) are changed it’ll echo– error happened. My script: my_error_flag=0 my_error_flag_o=0 do something….. if [[ “$my_error_flag”==”1” || “$my_error_flag_o”==”2” ] || [ “$my_error_flag”=”1” && “$my_error_flag_o”=”2” ]]; then echo “$my_error_flag” else echo “no flag” fi Basically, it should be, … Read more
For the life of me, I can’t remember how to set, delete, toggle or test a bit in a bitfield. Either I’m unsure or I mix them up because I rarely need these. So a “bit-cheat-sheet” would be nice to have. For example: flags = flags | FlagsEnum.Bit4; // Set bit 4. or if ((flags … Read more
Let’s say I have this enum: [Flags] enum Letters { A = 1, B = 2, C = 4, AB = A | B, All = A | B | C, } To check if for example AB is set I can do this: if((letter & Letters.AB) == Letters.AB) Is there a simpler way to … Read more
I’m trying to update my C++ compiler to C++11. I have searched a bit and I have come to the conclusion that I have to use the flag -std=c++0x or -std=gnu++0x, but I don’t know many things about flags. Can anyone help me? (I’m using Ubuntu 12.04.) Here is the error that I get from … Read more
From time to time I see an enum like the following: [Flags] public enum Options { None = 0, Option1 = 1, Option2 = 2, Option3 = 4, Option4 = 8 } I don’t understand what exactly the [Flags] attribute does. Anyone have a good explanation or example they could post? 1 13 The [Flags] … Read more
