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DATE 2016-11-01

LEARN

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MESSAGE

DATE	2016-11-16
FROM	Ruben Safir
SUBJECT	Subject: [Learn] C++ Workshop Announcement
From learn-bounces-at-nylxs.com Wed Nov 16 14:08:25 2016 Return-Path: X-Original-To: archive-at-mrbrklyn.com Delivered-To: archive-at-mrbrklyn.com Received: from www.mrbrklyn.com (www.mrbrklyn.com [96.57.23.82]) by mrbrklyn.com (Postfix) with ESMTP id 01900161312; Wed, 16 Nov 2016 14:08:25 -0500 (EST) X-Original-To: learn-at-nylxs.com Delivered-To: learn-at-nylxs.com Received: from [10.0.0.62] (flatbush.mrbrklyn.com [10.0.0.62]) by mrbrklyn.com (Postfix) with ESMTP id 63E0B160E77; Wed, 16 Nov 2016 14:08:22 -0500 (EST) To: Hangout , learn-at-nylxs.com From: Ruben Safir Message-ID: <56fbcdbc-f3d3-0c79-adcd-b6a6009f2647-at-mrbrklyn.com> Date: Wed, 16 Nov 2016 14:08:22 -0500 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.4.0 MIME-Version: 1.0 Subject: [Learn] C++ Workshop Announcement X-BeenThere: learn-at-nylxs.com X-Mailman-Version: 2.1.17 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: learn-bounces-at-nylxs.com Sender: "Learn" Thursday Nights at K&R will be the first Workshop on C++ programming with emphasis on Concurrency using the text C++ Concurrency in Action By Anthony Williams Manning Press 9781933988771 THe Killarny Rose is on 80 Beaver Street Lower Manhattan NYC Time:7:00PM Thursday Evening Light Refreshments to be served. compliments of me and donners I have a 5:45 appointing in Brooklyn and will be running from there Bring your Linux laptop with GCC see http://en.cppreference.com/w/cpp/thread/thread http://en.cppreference.com/w/cpp/thread/mutex #include #include #include #include #include #include std::map g_pages; std::mutex g_pages_mutex; void save_page(const std::string &url) { // simulate a long page fetch std::this_thread::sleep_for(std::chrono::seconds(2)); std::string result = "fake content"; std::lock_guard guard(g_pages_mutex); g_pages[url] = result; } int main() { std::thread t1(save_page, "http://foo"); std::thread t2(save_page, "http://bar"); t1.join(); t2.join(); // safe to access g_pages without lock now, as the threads are joined for (const auto &pair : g_pages) { std::cout << pair.first << " => " << pair.second << '\n'; } } Output: http://bar => fake content http://foo => fake content -- So many immigrant groups have swept through our town that Brooklyn, like Atlantis, reaches mythological proportions in the mind of the world - RI Safir 1998 http://www.mrbrklyn.com DRM is THEFT - We are the STAKEHOLDERS - RI Safir 2002 http://www.nylxs.com - Leadership Development in Free Software http://www2.mrbrklyn.com/resources - Unpublished Archive http://www.coinhangout.com - coins! http://www.brooklyn-living.com Being so tracked is for FARM ANIMALS and and extermination camps, but incompatible with living as a free human being. -RI Safir 2013 _______________________________________________ Learn mailing list Learn-at-nylxs.com http://lists.mrbrklyn.com/mailman/listinfo/learn