inlining

I've been writing a few classes lately; and I was wondering whether it's bad practice, bad for performance, breaks encapsulation or whether there's anything else inherently bad with actually defining some of the smaller member functions inside a header (I did try Google!). Here's an example I have of a header I've written with a lot of this: class Scheduler { public: typedef std::list<BSubsystem*> SubsystemList; // Make sure the pointer to entityManager is zero on init // so that we can check if one has been attached in Tick() Scheduler() : entityManager(0) { } // Attaches a manager to the

Why is the "someValue" variable which is readonly (but we still can change its value via reflection) output as "10", although it actually did change to 55? static class Program { static readonly int someValue = 10; static void Main(string[] args) { Console.WriteLine(someValue); // 10 typeof(Program) .GetField("someValue", BindingFlags.Static | BindingFlags.NonPublic) .SetValue(null, 55); // change readonly field via reflection to 55 Console.WriteLine(someValue); // output in console 10, // but in visual studio debugger it shows 55 Console.ReadKey(); } } Probably just a JIT optimization to

My answer to one of the question on SO was commented by Valentin Kuzub, who argues that inlining a property by JIT compiler will cause the reflection to stop working. The case is as follows: class Foo { public string Bar { get; set; } public void Fuzz<T>(Expression<Func<T>> lambda) { } } Fuzz(x => x.Bar); Fuzz function accepts a lambda expression and uses reflection to find the property. It is a common practice in MVC in HtmlHelper extensions. I don't think that the reflection will stop working even if the Bar property gets inlined, as it is a call to Bar that will be inlined and typeof(Foo)

Consider a function object F taking a constexpr size_t argument I struct F { template <size_t I> constexpr size_t operator()(size <I>) const { return I; } }; wrapped within a type size <I> , where (for brevity) template <size_t N> using size = std::integral_constant <size_t, N>; Of course, we could pass I directly but I want to emphasize that it is constexpr by using it as a template argument. Function F is dummy here but in reality it could do a variety of useful stuff like retrieving information from the I th element of a tuple. F is assumed to have the same return type regardless of I . I

Considering that you're trying solely to optimize for speed, what are good heuristics for deciding whether to inline a function or not? Obviously code size should be important, but are there any other factors typically used when (say) gcc or icc is determining whether to inline a function call? Has there been any significant academic work in the area? Wikipedia has a few paragraphs about this, with some links at the bottom: In addition to memory size and cache issues, another consideration is register pressure . From the compiler's point of view "the added variables from the inlined procedure

What is inlining? What is it used for? Can you inline something in C#? cgreeno What it is In the terms of C and C++ you use the inline keyword to tell the compiler to call a routine without the overhead of pushing parameters onto the stack. The Function instead has it's machine code inserted into the function where it was called. This can create a significant increase in performance in certain scenarios. Dangers The speed benefits in using "inlining" decrease significantly as the size of the inline function increases. Overuse can actually cause a program to run slower. Inlining a very small

I need to inline css from a stylesheet in c#. Like how this works. http://www.mailchimp.com/labs/inlinecss.php The css is simple, just classes, no fancy selectors. I was contemplating using a regex (?<rule>(?<selector>[^{}]+){(?<style>[^{}]+)})+ to strip the rules from the css, and then attempting to do simple string replaces where the classes are called, but some of the html elements already have a style tag, so I'd have to account for that as well. Is there a simpler approach? Or something already written in c#? UPDATE - Sep 16, 2010 I've been able to come up with a simple CSS inliner

I am referring to this discussion . I have never written any code in C or in C++ . I do not have any CS background. However I have been working as Java developer for 5 years and now I have decided to learn more about CS and do some catching up. When executing a given piece of code, whenever you call a standard function the execution time is slightly higher than dumping there the code contained into that function. Dumping every time the whole code contained in a function is on the other end unmainteinable because it obviously leads to a whole mess of duplication of code. Inlining solves the