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Memo can print itself.

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This commit is contained in:
Rob Rix 2015-09-25 11:57:28 -04:00
parent b25095372a
commit ece5c942d5
1 changed files with 10 additions and 1 deletions
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11
prototype/Doubt/Memo.swift
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@ -1,4 +1,4 @@
public struct Memo<A> {
public struct Memo<A>: CustomDebugStringConvertible, CustomStringConvertible {
public init(unevaluted: () -> A) {
self.init(.Unevaluated(unevaluted))
}
@ -25,6 +25,15 @@ public struct Memo<A> {
public func flatMap<B>(transform: A -> Memo<B>) -> Memo<B> {
return Memo<B> { transform(self.value).value }
}
public var description: String {
return String(value)
}
public var debugDescription: String {
return String(reflecting: value)
}
}
private final class MutableBox<A> {