Any trick to defining an enum as flags/powers of 2 without eventually needing a calculator?

Question

I know I can multiply but being the lazy programming I am I do not want to.

Has anyone devised some sorcery to auto number the enums as powers of two?

Here's the example I have just to make it concrete:

[Flags] private enum Targets : uint {     None = 0,     Campaigns = 1,     CampaignGroups = 2,     Advertisers = 4,     AdvertiserGroups = 8,     AffiliateGroups = 16,     Affiliates = 32,     Creatives = 64,     DetailedLeads = 128,     DetailedSales = 256,     ProgramLeads = 512,     CreativeDeployments = 1024,     CampaignCategories = 2048,     Payouts = 4096,     All = uint.MaxValue } 

Answer 1

Write the values as shifted bits and let the compiler do the math:

[Flags] private enum Targets : uint {     None                = 0,     Campaigns           = 1,     CampaignGroups      = 2 << 0,     Advertisers         = 2 << 1,     AdvertiserGroups    = 2 << 2,     AffiliateGroups     = 2 << 3,     Affiliates          = 2 << 4,     Creatives           = 2 << 5,     DetailedLeads       = 2 << 6,     DetailedSales       = 2 << 7,     ProgramLeads        = 2 << 8,     CreativeDeployments = 2 << 9,     CampaignCategories  = 2 << 10,     Payouts             = 2 << 11,     // etc. } 

James's suggestion is a good one, too. In fact I like this way even better. You could also write it like this:

[Flags] private enum Targets : uint {     None                = 0,     Campaigns           = 1 << 0,     CampaignGroups      = 1 << 1,     Advertisers         = 1 << 2,     AdvertiserGroups    = 1 << 3,     AffiliateGroups     = 1 << 4,     // etc. }