NAME¶

std::execution::upon_error - std::execution::upon_error

Synopsis¶

Defined in header <execution>
execution::sender auto upon_error(

execution::sender auto input, (since C++26)
std::invocable<errors-sent-by(input)...> function

);

Parameters¶

input - sender which once an error occurs, sends the errors to the function
function - invocable to be called with errors in case an error occurs by input
sender

Return value¶

Returns a sender describing the task graph described by the input sender, with an
added node of invoking the provided function with the errors sent by the input
sender as arguments (in case of an error).