| commit | ce8a737c2fe2032561a9af915378fcc8b96fd926 | [log] [tgz] |
|---|---|---|
| author | RJ Ascani <rjascani@pigweed.infra.roller.google.com> | Wed Aug 10 21:41:52 2022 +0000 |
| committer | CQ Bot Account <pigweed-scoped@luci-project-accounts.iam.gserviceaccount.com> | Wed Aug 10 21:41:52 2022 +0000 |
| tree | 7d6ece6fd91e85e3901182b61fbd84ea722a45bb | |
| parent | 078a2ac65b46061cd4b2cca3b4ca3668cddf86b7 [diff] |
[roll pigweed] pw_result: Add and_then monadic operation
This CL adds a monadic operation to pw::Result<T> for `and_then`. This
method takes a function, which will be invoked only if the pw::Result<T>
contains a value. If the pw::Result<T> contains a status, then that
status will be returned. This is useful for chaining multiple operations
that might fail.
Result<std::string> GetIntegerString();
Result<int> ConvertStringToInteger(const std::string&);
Result<int> x = GetIntegerString()
.and_then(ConvertStringToInteger)
.and_then([](int i) { return Result<int>(i * 2) });
Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/100802
https://pigweed.googlesource.com/pigweed/pigweed
pigweed Rolled-Commits: 6e3bc74cc4b71c0..940a29382017e8c
Roller-URL: https://ci.chromium.org/b/8806182317674255089
Cq-Cl-Tag: roller-builder:pigweed-zephyr-roller
Cq-Cl-Tag: roller-bid:8806182317674255089
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I8f97812b46068e6896a35aeecf358c19f4862309
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/zephyr-integration/+/105786
Bot-Commit: Pigweed Integration Roller <pigweed-integration-roller@pigweed.google.com.iam.gserviceaccount.com>
Commit-Queue: Pigweed Integration Roller <pigweed-integration-roller@pigweed.google.com.iam.gserviceaccount.com>