C#

Pete O'Hanlon wrote:

to get the OP to think

PIEBALDconsult wrote:

Regardless of concerns of "performance", grouping a bunch of related flags into an enumeration is a good design choice.

Bastard Programmer from Hell

OP wrote:

I have 10 bool variables in a class. Instead of creating 10 bools, how to create a single bool and bit flags for remaining 9 bool variables inorder to efficiently use memory.

Bastard Programmer from Hell

jtstanish wrote:

Enumeration is the simplest answer.

SledgeHammer01 wrote:

I wouldn't expose an enum from object though ... I would have 10 public properties

SledgeHammer01 wrote:

flag enums don't play nicely with ... Winforms.

[Flags]
public enum MyBools : int
{
    MyBool1 = 1,
    MyBool2 = 2,
    MyBool3 = 4,
    MyBool4 = 8,
    ...
    MyBool10 = 512,
}
public bool HasBool(int sumOfBools, MyBools specificBool)
{
    return ((sumOfBools & specificBool) > 0);
}

Bernhard Hiller wrote:

return ((sumOfBools & specificBool) > 0);

public struct Flags {
 public uint Value;

 public bool this[int i] { 
  get { return 1 & (Value >> i); }
  set { uint mask = 1 << i; Value = (Value & ~mask) | (value ? 1 : 0) << i; }
 }
}