class Bid extends AnyRef
The class Bid
represents bids made for items up for auction in an electronic auction
house. Each Bid
object stores the name of the bidder --- that is, the customer who made
the bid --- as well as the maximum amount the bidder is willing to pay for the item.
A bid object may also be created that has no bidder at all. This is useful, because a
Bid
object with no bidder can now be used for representing the initial prices of auctions
before any genuine bids have been made.
A bid object is immutable after creation.
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Instance Constructors
- new Bid(bidder: Option[String], limit: Int)
- bidder
the name of the customer who made the bid, wrapped in an
Option
, orNone
if the object represents an initial price with no bidder- limit
the maximum sum of money the bidder is willing to pay for the item
Value Members
- def beats(olderBid: Bid): Boolean
Determines whether this bid beats the given competing bid.
Determines whether this bid beats the given competing bid. A bid beats another if it has a higher limit, or if the limits are equal and the other bid is a bidderless initial bid.
- val bidder: Option[String]
- def isInitialBid: Boolean
Determines whether this bid is an "bidderless bid" that represents an auction's initial price.
- val limit: Int
- def winner(olderBid: Bid): Bid
Checks whether this bid beats the given older bid, and returns one of the two bids accordingly: this bid if it beats the given one, the given bid otherwise.