# Group 2

- [第二部分：Operator](/combine-asynchronous-programming-with-swift/group-2/di-er-bu-fen-operator.md)
- [第 3 节：转换操作符](/combine-asynchronous-programming-with-swift/group-2/di-er-bu-fen-operator/di-3-jie-zhuan-huan-cao-zuo-fu.md)
- [第 4 节：过滤操作符](/combine-asynchronous-programming-with-swift/group-2/di-er-bu-fen-operator/di-4-jie-guolcao-zuo-fu.md)
- [第 5 节：组合操作符](/combine-asynchronous-programming-with-swift/group-2/di-er-bu-fen-operator/di-5-jie-zu-he-cao-zuo-fu.md)
- [第 6 节：时间操纵操作符](/combine-asynchronous-programming-with-swift/group-2/di-er-bu-fen-operator/di-6-jie-shi-jian-cao-zong-cao-zuo-fu.md)
- [第 7 节：序列操作符](/combine-asynchronous-programming-with-swift/group-2/di-er-bu-fen-operator/di-7-jie-xu-lie-cao-zuo-fu.md)
- [第 8 节：实践：“Collage”项目](/combine-asynchronous-programming-with-swift/group-2/di-er-bu-fen-operator/di-8-jie-shi-jian-collage-xiang-mu.md)