Module optional 

Available on crate feature core only.

Represents an optional (possibly uninitialized) value.

Enums

NSTDOptional

Represents an optional (possibly uninitialized) value.

Constants

NSTD_OPTIONAL_NONE

Describes an NSTDOptional with no value.

NSTD_OPTIONAL_SOME

Describes an NSTDOptional with “some” initialized value.

Type Aliases

NSTDOptionalAny

Represents an optional value of type NSTDAny.

NSTDOptionalAnyMut

Represents an optional value of type NSTDAnyMut.

NSTDOptionalAnyRef

Represents an optional value of type NSTDAnyRef.

NSTDOptionalAnyRefMut

Represents an optional value of type NSTDAnyRefMut.

NSTDOptionalBool

Represents an optional value of type NSTDBool.

NSTDOptionalChar

Represents an optional value of type NSTDChar.

NSTDOptionalChar8

Represents an optional value of type NSTDChar8.

NSTDOptionalChar16

Represents an optional value of type NSTDChar16.

NSTDOptionalChar32

Represents an optional value of type NSTDChar32.

NSTDOptionalFloat32

Represents an optional value of type NSTDFloat32.

NSTDOptionalFloat64

Represents an optional value of type NSTDFloat64.

NSTDOptionalInt

Represents an optional value of type NSTDInt.

NSTDOptionalInt8

Represents an optional value of type NSTDInt8.

NSTDOptionalInt16

Represents an optional value of type NSTDInt16.

NSTDOptionalInt32

Represents an optional value of type NSTDInt32.

NSTDOptionalInt64

Represents an optional value of type NSTDInt64.

NSTDOptionalRef

Represents an optional value of type NSTDRef.

NSTDOptionalRefMut

Represents an optional value of type NSTDRefMut.

NSTDOptionalUInt

Represents an optional value of type NSTDUInt.

NSTDOptionalUInt8

Represents an optional value of type NSTDUInt8.

NSTDOptionalUInt16

Represents an optional value of type NSTDUInt16.

NSTDOptionalUInt32

Represents an optional value of type NSTDUInt32.

NSTDOptionalUInt64

Represents an optional value of type NSTDUInt64.