protocol Strideable Conforming types are notionally continuous, one-dimensional values that can be offset and measured. See also: stride(from: to: by:) and stride(from: through: by:) Inheritance Comparable, Equatable, _Comparable, _Strideable View Protocol Hierarchy → Associated Types Stride : SignedNumberType A type that can represent the distance between two values of Self Import import Swift Instance Methods func <(_:rhs:) Required A strict total order over instances of Self Declaration func <(lhs: Self, rhs: Self) -> Bool Declared In _Comparable func <=(_:rhs:) Declaration func <=(lhs: Self, rhs: Self) -> Bool Declared In Comparable func ==(_:rhs:) Required Return true if lhs is equal to rhs. Equality implies substitutability. When x == y, x and y are interchangeable in any code that only depends on their values. Class instance identity as distinguished by triple-equals === is notably not part of an instance's value. Exposing other non-value aspects of Equatable types is discouraged, and any that are exposed should be explicitly pointed out in documentation. Equality is an equivalence relation x == x is true x == y implies y == x x == y and y == z implies x == z Inequality is the inverse of equality, i.e. !(x == y) iff x != y Declaration func ==(lhs: Self, rhs: Self) -> Bool Declared In Equatable func >(_:rhs:) Declaration func >(lhs: Self, rhs: Self) -> Bool Declared In Comparable func >=(_:rhs:) Declaration func >=(lhs: Self, rhs: Self) -> Bool Declared In Comparable func advancedBy(_:) Required Returns a Self x such that self.distanceTo(x) approximates n. Complexity: O(1). See also: RandomAccessIndexType's advancedBy, which provides a stronger semantic guarantee. Declaration func advancedBy(n: Stride) -> Self Declared In _Strideable func distanceTo(_:) Required Returns a stride x such that self.advancedBy(x) approximates other. Complexity: O(1). See also: RandomAccessIndexType's distanceTo, which provides a stronger semantic guarantee. Declaration func distanceTo(other: Self) -> Stride Declared In _Strideable