-(_:_:)

Declaration

static func - (lhs: Subscribers.Demand, rhs: Subscribers.Demand) -> Subscribers.Demand

Discussion

When subtracting any value (including .unlimited) from .unlimited, the result is still .unlimited. Subtracting .unlimited from any value (except .unlimited) results in .max(0). A negative demand is impossible; when an operation would result in a negative value, Combine adjusts the value to .max(0).

See Also

Performing mathematical operations

• *(_:_:)
• *=(_:_:)
• +(_:_:)
• +(_:_:)
• +=(_:_:)
• +=(_:_:)
• -(_:_:)
• -=(_:_:)
• -=(_:_:)