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Mutex example / tutorial? [closed]

...pt. Hope the example gives you a clear picture of the concept.] With C++11 threading: #include <iostream> #include <thread> #include <mutex> std::mutex m;//you can use std::lock_guard if you want to be exception safe int i = 0; void makeACallFromPhoneBooth() { m.lock();/...
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SQL: How to get the count of each distinct value in a column?

... 1 Answer 1 Active ...
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Nginx缓存解决方案:SRCache - 更多技术 - 清泛网 - 专注C/C++及内核技术

...表一表Nginx配置文件长啥样: lua_shared_dict phoenix_status 100m; lua_package_path '/path/to/phoenix/include/?.lua;/path/to/phoenix/vendor/?.lua;;'; init_by_lua_file /path/to/phoenix/config.lua; server { listen 80; server_name foo.com; root /path/to/root; ...
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Getting image dimensions without reading the entire file

... 106 Your best bet as always is to find a well tested library. However, you said that is difficult,...
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How to list all the files in a commit?

...rmatted list of all files that were part of the commit given by a hash (SHA1), with no extraneous information. 30 Answers ...
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Why is Java's boolean primitive size not defined?

... 116 Short answer: yes, boolean values are manipulated as 32-bit entities, but arrays of booleans u...
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Appending to an empty DataFrame in Pandas?

...ata = pd.DataFrame({"A": range(3)}) >>> df.append(data) A 0 0 1 1 2 2 But the append doesn't happen in-place, so you'll have to store the output if you want it: >>> df Empty DataFrame Columns: [] Index: [] >>> df = df.append(data) >>> df A 0 0 1 1 2 ...
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PSQLException: current transaction is aborted, commands ignored until end of transaction block

...ing the following (truncated) stacktrace in the server.log file of JBoss 7.1.1 Final: 20 Answers ...
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What is “point free” style (in Functional Programming)?

... | edited Oct 28 '15 at 2:20 Nayuki 16.2k55 gold badges4444 silver badges7171 bronze badges answ...
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How to keep the local file or the remote file during merge using Git and the command line?

... 314 You can as well do: git checkout --theirs /path/to/file to keep the remote file, and: git c...