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How is TeamViewer so fast?
...neric desktop usage is linear movement of elements (scrolling text, moving windows, etc. opposed to transformation of elements).
The DirectX 3D performance of 1 FPS seems to confirm my guess to some extent.
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Generate JSON string from NSDictionary in iOS
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Hard coded constants are a bit scary. Why not use NSUTF8StringEncoding etc.?
– Ian Newson
Nov 29 '13 at 14:11
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How to change the output color of echo in Linux
... to the terminal's default
tput bel # Play a bell
With compiz wobbly windows, the bel command makes the terminal wobble for a second to draw the user's attention.
Scripts
tput accepts scripts containing one command per line, which are executed in order before tput exits.
Avoid temporary f...
What are the differences between various threading synchronization options in C#?
...cess the same mutex object.
In contrast, the Mutex class is a wrapper to a Win32 construct. While it is more powerful than a monitor, a mutex requires interop transitions that are more computationally expensive than those required by the Monitor class.
Semaphores (hurt my brain).
Use the Semaph...
Command line to remove an environment variable from the OS level configuration
Windows has the setx command:
9 Answers
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How does the Windows Command Interpreter (CMD.EXE) parse scripts?
...om which provides good help regarding how to write batch scripts that the Windows Command Interpreter will run.
7 Answers
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Performance surprise with “as” and nullable types
.... While the IL code for the new syntax is indeed 1 byte smaller, it mostly wins big by making zero calls (vs. two) and avoiding the unbox operation altogether when possible.
// static void test1(Object o, ref int y)
// {
// int? x = o as int?;
// if (x.HasValue)
// y = x.Value;
// }...
byte + byte = int… why?
...first cast to integers and the result of addition of two integers is a (32-bit) integer.
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How to use the PI constant in C++
...he C/C++ standards.
*/
However:
on newer platforms (at least on my 64 bit Ubuntu 14.04) I do not need to define the _USE_MATH_DEFINES
On (recent) Linux platforms there are long double values too provided as a GNU Extension:
# define M_PIl 3.141592653589793238462643383279502884L /* pi...
Node.js vs .Net performance
... have any hard numbers to prove one way or another, but I think node would win the LOAD competition for the typical web app. A highly optimized (100% async) .NET app might give the equivalent node.js app a run for it's money, but if you took an average of all the .NET and all the node apps out there...