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Add a convenience to copy terms into diffs.

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This commit is contained in:
Rob Rix 2015-10-22 18:51:14 -04:00
parent 1ee9663e6e
commit 6cca28582d
1 changed files with 4 additions and 0 deletions
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4
prototype/DoubtTests/SESTests.swift
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@ -43,6 +43,10 @@ final class SESTests: XCTestCase {
private typealias Term = Cofree<String, ()> private typealias Term = Cofree<String, ()>
private typealias Diff = Free<String, (), Patch<Term>> private typealias Diff = Free<String, (), Patch<Term>>
private func copy(term: Term) -> Diff {
return hylo(Diff.Introduce(()), Term.unwrap)(term)
}
private let a = Term((), .Leaf("a")) private let a = Term((), .Leaf("a"))
private let b = Term((), .Leaf("b")) private let b = Term((), .Leaf("b"))
private let c = Term((), .Leaf("c")) private let c = Term((), .Leaf("c"))