Stack

public struct Stack<Element>
extension Stack: CustomDebugStringConvertible where Element == CustomDebugStringConvertible

A basic stack type implementing the LIFO principle - only the last inserted element can be accessed and removed.

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  • Creates an empty Stack.

    Declaration

    Swift

    public init()
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  • True if the stack has no elements. False otherwise.

    Declaration

    Swift

    public var isEmpty: Bool { get }
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  • The number of elements in this stack.

    Declaration

    Swift

    public var count: Int { get }
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  • Pushes (appends) an element onto the stack.

    Declaration

    Swift

    public mutating func push(_ element: Element)

    Parameters

    element

    The element to push onto the stack.
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  • Removes and returns the last element of the stack.

    Declaration

    Swift

    @discardableResult
public mutating func pop() -> Element?

    Return Value

    The last element of the stack if the stack is not empty; otherwise, nil.

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  • Returns the last element of the stack if the stack is not empty; otherwise, nil.

    Declaration

    Swift

    public func peek() -> Element?
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Available where Element == CustomDebugStringConvertible