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Implement extend on Cofree.

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This commit is contained in:
Rob Rix 2015-10-14 10:00:16 -04:00
parent ab554c52a0
commit 26f0ea419d
1 changed files with 4 additions and 0 deletions
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4
prototype/Doubt/Cofree.swift
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@ -21,4 +21,8 @@ extension Cofree {
return b
}
}
func extend<Other>(transform: Cofree -> Other) -> Cofree<A, Other> {
return .Unroll(transform(self), unwrap.map { $0.extend(transform) })
}
}