StatusOr returns a value on success and a Status on error.
future and promise futures (a holder that will receive a value asynchronously) and promises (the counterpart of a future, where values are stored asynchronously). They satisfy the API for std::future and std::promise, and add support for callbacks and cancellation.
More information
Error Handling for more details about how the libraries report run-time errors and how you can handle them.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-14 UTC."],[[["\u003cp\u003eThis library provides common components for Google Cloud C++ Client Libraries, including credentials, options, status, and futures.\u003c/p\u003e\n"],["\u003cp\u003eThe latest version available is 2.37.0-rc, and this document also contains links to documentation for versions ranging from 2.36.0 down to 2.10.1.\u003c/p\u003e\n"],["\u003cp\u003eIt is important to avoid using any namespaces with \u003ccode\u003einternal\u003c/code\u003e or \u003ccode\u003etesting\u003c/code\u003e in their names, as they are subject to change without notice.\u003c/p\u003e\n"],["\u003cp\u003eThe documentation provides details on error handling, client library configuration, authentication components, and logging components.\u003c/p\u003e\n"]]],[],null,[]]
