Specialize promise as defined in ISO/IEC TS 19571:2016 for void.
Constructors
promise
Creates a promise with an unsatisfied shared state.
promise
Creates a promise with an unsatisfied shared state.
Parameter
Name
Description
cancellation_callback
std::function< void()>
promise
Creates a promise without a shared state.
Parameter
Name
Description
x
null_promise_t
promise
Constructs a new promise and transfer any shared state from rhs.
Parameter
Name
Description
promise &&
~promise
Abandons any shared state.
If the shared state was not already satisfied it becomes satisfied with a std::future_error exception. The error code in this exception is std::future_errc::broken_promise.
promise
Parameter
Name
Description
promise const &
Operators
operator=
Abandons the shared state in *this, if any, and transfers the shared state from rhs.
Parameter
Name
Description
rhs
promise &&
Returns
Type
Description
promise &
operator=
Parameter
Name
Description
promise const &
Returns
Type
Description
promise &
Functions
swap
Swaps the shared state in *this with rhs.
Parameter
Name
Description
other
promise &
Returns
Type
Description
void
get_future
Creates the future<void> using the same shared state as *this.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Hard to understand","hardToUnderstand","thumb-down"],["Incorrect information or sample code","incorrectInformationOrSampleCode","thumb-down"],["Missing the information/samples I need","missingTheInformationSamplesINeed","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-03-05 UTC."],[[["This page provides documentation for the `promise` class in the Google Cloud C++ library, specializing in `void` types."],["It lists available versions of the `promise` class, ranging from 2.10.1 up to the latest release candidate, 2.37.0-rc, and all versions between."],["The `promise` class documentation includes details on constructors, assignment operators, the `swap` function, and methods like `get_future` and `set_value`."],["The main function of the `promise` class is to satisfy the shared state, which can also be abandoned and will result in an exception."],["There are different constructors to the class such as ones that create a promise with or without a shared state, or by transferring a shared state from another promise."]]],[]]
