Note that bitwise or uses three vertical bars:
1 2 3 4 5 6 7 8 9 10 11 12 13
[<System.Flags>]
type MyEnum =
| A = 1
| B = 2
| C = 4
let z = MyEnum.A ||| MyEnum.C
printfn "%A" z // A, C
printfn "%d" (int z) // 5
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I'm interfacing to a C library. The library uses #define constant flags of the form:
#define FLAG1 1
#define FLAG2 2
#define FLAG3 4
#define FLAG4 8
In the C# wrapper, I have defined those as enums with specified values. In F#, I can't pass the flags in with the single pipe | operator. I have to use +.
Is there a way to use | to keep true to the original API?