package lmdb

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Module type Mdb.FlagsSource

Operations on sets of flags.

type t

The type of a set of flags

val (+) : t -> t -> t

a + b is the union of flag sets a and b. This corresponds to a bitwise or on C bitfields.

val (*) : t -> t -> t

a * b is the intersection of flag sets a and b. This corresponds to a bitwise and on C bitfields.

val test : t -> t -> bool

test a b is true only if a is a subset of b. This corresponds to a & b == a for C bitfields.

val unset : t -> t -> t

unset a b removes flags a from flag set b. This corresponds to a & ~b for C bitfields.

val eq : t -> t -> bool

eq a b The equals relation.

val of_int : int -> t
val to_int : t -> int
val none : t

none The empty set of flags.