Defined in header <execution> | ||
execution::senderauto then( execution::senderauto input, std::invocable</*values-sent-by*/(input)...> function); | (since C++26) | |
| input | - | sender which once executed sends the values upon which the function executes |
| function | - | invocable to be called by the new sender chained to the input sender |
Returns a sender describing the task graph described by the input sender, with an added node of invoking the provided function with the values sent by the input sender as arguments.
then is guaranteed to not begin executing function until the returned sender is started.
Possible usage ofexecution::then.
execution::senderauto input= get_input();execution::senderauto snd= execution::then(input,[](auto...args){std::print(args...);});// snd describes the work described by pred// followed by printing all of the values sent by pred
