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c# Programming Glossary: optimizationsIs shifting bits faster than multiplying and dividing in Java? .NET? http://stackoverflow.com/questions/1168451/is-shifting-bits-faster-than-multiplying-and-dividing-in-java-net the compiler to take care of the tedious details of micro optimizations. It's been years since doing your own shifts outsmarted the..
Do try/catch blocks hurt performance when exceptions are not thrown? http://stackoverflow.com/questions/1308432/do-try-catch-blocks-hurt-performance-when-exceptions-are-not-thrown catch blocks. I've looked around and found it can affect optimizations but it seems to only apply when a variable is shared between..
How can I obtain all the possible combination of a subset? http://stackoverflow.com/questions/13765699/how-can-i-obtain-all-the-possible-combination-of-a-subset 6817 Jodrell's Update I've built in release mode i.e. optimizations on. When I run via Visual Studio I don't get a consistent bias..
How much faster is C++ than C#? http://stackoverflow.com/questions/138361/how-much-faster-is-c-than-c in many cases. This is mainly due to the more advanced JIT optimizations being complicated to implement and the really cool ones are.. expensive but also commonly leads to errors due to over optimizations. On the other hand code in interpreted languages gets faster.. without you doing anything. And there are a lot of useful optimizations JIT compilers can do that are simply impossible in languages..
http://stackoverflow.com/questions/2031217/what-is-the-fastest-way-i-can-compare-two-equal-size-bitmaps-to-determine-whethe is useful. Thanks everyone. Edit 2 Forgot to turn optimizations on doing that gives GrayWizardX's answer even more of a boost..
What guarantees are there on the run-time complexity (Big-O) of LINQ methods? http://stackoverflow.com/questions/2799427/what-guarantees-are-there-on-the-run-time-complexity-big-o-of-linq-methods There are very very few guarantees but there are a few optimizations Extension methods that use indexed access such as ElementAt..
Performance Tests of Serializations used by WCF Bindings http://stackoverflow.com/questions/3790728/performance-tests-of-serializations-used-by-wcf-bindings Serialize 78 Deserialize 134 with test rig compiled with optimizations run at command line and note I had to invent the Player class..
Fastest way to interface between live (unsaved) Excel data and C# objects http://stackoverflow.com/questions/3840270/fastest-way-to-interface-between-live-unsaved-excel-data-and-c-sharp-objects cross process marshaling involved that will overwhelm any optimizations you can do by switching languages from say C# to C . Stick to..
Performance differences between debug and release builds http://stackoverflow.com/questions/4043821/performance-differences-between-debug-and-release-builds built into the JIT compiler. I know it makes the following optimizations Method inlining. A method call is replaced by the injecting.. early by the compiler but happens at JIT time when other optimizations make this possible. Copy propagation. x a y x becomes y a This.. right ones is critical to perf. These are very important optimizations that can make a great deal of difference when for example you..
http://stackoverflow.com/questions/445067/if-vs-switch-speed as e.g. descibed in this article due to compiler optimizations. How does this optimization actually work Does anyone have a..
Is there any performance difference between ++i and i++ in C#? http://stackoverflow.com/questions/467322/is-there-any-performance-difference-between-i-and-i-in-c although highly unlikely that the JIT compiler can do some optimizations in certain contexts that will favor one version over the other...
When is optimization premature? [closed] http://stackoverflow.com/questions/4832642/when-is-optimization-premature such places in your code. I personally don't worry about optimizations that aren't too obvious I just use a profiler later if I need..
Why doesn't .NET/C# optimize for tail-call recursion? http://stackoverflow.com/questions/491376/why-doesnt-net-c-optimize-for-tail-call-recursion steps are not targeted to being more aggressive in their optimizations I suspect this is because they simply don't want to have bugs..
converting a .net Func<T> to a .net Expression<Func<T>> http://stackoverflow.com/questions/767733/converting-a-net-funct-to-a-net-expressionfunct an expression. If there's any way you could do so due to optimizations and other things done by the compiler some data might be thrown..
http://stackoverflow.com/questions/786383/c-sharp-events-and-thread-safety on the copied list Updated I thought from reading about optimizations that this might also require the event member to be volatile..
http://stackoverflow.com/questions/90871/debug-vs-release-in-net aware of any comprehensive documentation on exactly what optimizations are enabled in fact I suspect Microsoft would want to be free..
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