The Function template std::async operates the perform file asynchronously (most likely within a different thread which might certainly be a Portion of a thread pool) and returns a std::future that should sooner or later keep the result of that purpose call. 1) Behaves like (2) is named with plan becoming https://alphawireless.com/future-proofing-american-utilities-why-900-mhz-is-critical-for-utility-communications/