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How to avoid overflow in expr. A * B - C * D

...e their types are: signed long long int A, B, C, D; Each number can be really big (not overflowing its type). While A*B could cause overflow, at same time expression A*B - C*D can be really small. How can I compute it correctly? ...
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Clean code to printf size_t in C++ (or: Nearest equivalent of C99's %z in C++)

...isual C++ for instance use %Iu and %Id respectively, I think that gcc will allow you to use %zu and %zd. You could create a macro: #if defined(_MSC_VER) || defined(__MINGW32__) //__MINGW32__ should goes before __GNUC__ #define JL_SIZE_T_SPECIFIER "%Iu" #define JL_SSIZE_T_SPECIFIER "%Id" ...
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How can I check if an ip is in a network in Python?

... Additionally, struct.unpack('L',socket.inet_aton(ip))[0] will fail on architectures where 'L' unpacks to something different than 4 bytes, regardless of endianness. – Rafał Dowgird May 4 '09 at...
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Using ping in c#

When I Ping a remote system with windows it says there is no reply, but when I ping with c# it says success. Windows is correct, the device is not connected. Why is my code able to successfully ping when Windows is not? ...
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How can I convert immutable.Map to mutable.Map in Scala?

How can I convert immutable.Map to mutable.Map in Scala so I can update the values in Map ? 5 Answers ...
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How to set the UITableView Section title programmatically (iPhone/iPad)?

... answered May 8 '12 at 20:27 AlladinianAlladinian 31.3k44 gold badges7575 silver badges8181 bronze badges ...
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How do I verify that an Android apk is signed with a release certificate?

...oid\sdk\build-tools\25.0.3` (and every other build tools version I had installed) – Jon May 15 '17 at 20:17 2 ...
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How to create composite primary key in SQL Server 2008

... | improve this answer | follow | answered Oct 13 '10 at 9:39 ThiloThilo 235k8989 gold badges460460 ...
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How to use QueryPerformanceCounter?

I recently decided that I needed to change from using milliseconds to microseconds for my Timer class, and after some research I've decided that QueryPerformanceCounter is probably my safest bet. (The warning on Boost::Posix that it may not works on Win32 API put me off a bit). However, I'm not re...
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How to override Backbone.sync?

I'm trying out Backbone.js, and one of the things I'm trying is to make a call to a remote API, so I need to be able to override Backbone.sync, as I understand the documentation . ...