608日目

日記

今日書いたコード

WIP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! · Gurrium/ReadGraphemeCluster@d009232 · GitHub

感想

"ここ"が呼ばれるまでwithThrowingTaskGroupがスタックしてそうで詰まっている。

// [https://github.com/Gurrium/ReadGraphemeCluster/commit/d009232e69d957413022f07ae7df1e8710e93da8#diff-102f0c74b4bceb38182a3d1f4823344c81ab3d0d92662ce8f740d1f595889185R154]
withThrowingTaskGroup { taskGroup in
    for try await scalar in fileHandle.bytes.unicodeScalars {
        if Task.isCancelled {
            return nil // ここ
        }
    // ...
    }

    // ...
    taskGroup.cancelAll()
    // ...
}

こうあるのでcancelAll()を呼べばいいと思うんだが…

A group waits for all of its child tasks to complete, throw an error, or be canceled before it returns https://developer.apple.com/documentation/swift/withthrowingtaskgroup(of:returning:body:)#discussion

飽きたので終わり。