wrapper

问题 I would like to write a c++ wrapper for a C API. for this it is most convenient to just include the C-API header in my own header, but this also includes the header into the file of the outer system, that should not be exposed to the C-API. capi.h enum MyFlags { MY_FLAG_A, MY_FLAG_B, }; void FOO_bar(int flags); cppapi.hh #include "capi.h" enum class MyFlags { A = MY_FLAG_A, B = MY_FLAG_B }; namespace foo { void bar(MyFlags flags) { FOO_bar((int)flags); } } it is just to translate c naming

问题 I've made a class for working with bits for unsigned int(8, 16, 32...), and I've been trying to benchmark it compared to the bare bitwise operations but getting an accurate test of the speed of bitwise operations is complicated to say the least. The reason for the wrapper is that it is a lot less complicated to use. Now, while this may be more academically useful than practically, I would like to know if it was possible to make a class wrapping around an int that is so transparent that it is

问题 I have been heavily contemplating adding the Embedded MYSQL Server Library into my application. My software is a layer between a Game Server and a Web Management Panel that provides extra functionality. Many of our customers have been requesting MySQL databases for their servers (since this is what their plugins are developed to use), and being able to run one within my software rather than manually set them up would be fantastic. Is there a .NET wrapper for this library I am missing? The

问题 I'm trying to create a C# wrapper for a C .lib that contains functions take take a void pointer using SWIG. int inputPointExample(void* input); int outputPointerExample(void* output); By default SWIG doesn't handle void pointer conversions, you have to use typemaps somehow. I found this page -> http://www.nickdarnell.com/2011/05/swig-and-a-miss/ Number 9 says to use the following typemaps to handle void pointers... %typemap(ctype) void * "void *" %typemap(imtype) void * "IntPtr" %typemap

问题 In case I have a really big list (>100k elements) that can be retrieved from some object through function call, is there a way to wrap that list to make it immutable to the caller without copying it to tuple ? In the following example I have only one list field, but the solution should work for any number of list fields. class NumieHolder(object): def __init__(self): self._numies = [] def add(self, new_numie): self._numies.append(new_numie) @property def numies(self): # return numies embedded

问题 I am using the newly released Annotation Chart in gwt by calling native javascript, and what I got until now is to have it display the example chart as it is, but the problem I am having is that it is not interactive at all. It looks more like an image. Anyone got any idea about how might I make this work properly? Here's the code I am using: public void onModuleLoad() { createChart(); } private native void createChart() /*-{ $wnd.google.setOnLoadCallback(drawChart); function drawChart() {

问题 we would like to use appassembler-maven-plugin to generate daemon scripts for our apps, we want to avoid having multiple configuratoins and generated scripts for the different environments, e.g. test, prod, etc., and would like to be able to set a jvm system property or add an extra command line argument when starting. I have been looking into this for a while ow and can't seem to find a solution. If anybody has any ideas or suggestions they would be greatly appreciated, thanks 回答1: You can

问题 I'd like to use a timer in a Scala Swing application. I can use the Java version, only it means I have to implement the ActionListener interface. I'd rather use the Scala Publishers / Reactors model for consistency, so I can have things that listenTo the timer. Here's what I tried: class ScalaTimer(time: Int) extends Component { val t = new javax.swing.Timer(time, new java.awt.event.ActionListener { def actionPerformed(e: java.awt.event.ActionEvent) { publish(new scala.swing.event.ActionEvent

问题 I'm trying to change the behaviour of some functions in C with help of the preprocessor; and also add optional parameters that can be set on or off... The basic pattern for the optional parameters is easy: #ifdef OPT_PARAM #define my_func(a, b, opt) _my_func(a, b, opt) #else #define my_func(a, b, opt) _my_func(a, b) #endif /*the rest of the code always calls "my_func" with all the params and not the underscored version...*/ #ifdef OPT_PARAM void _my_func(int a, int b, int opt) #else void _my

问题 I have a problem using Boolean wrapper with JSON Object, when JSON object is created for Boolean values it contain string cotes for example "isUrgent" : "1" Now the issue is I have to wrap it manually in my code each time for each request/response Can any body please provide me a permanent solution for above problem? 回答1: The solution is to customize the deserializer for the boolean type. All you need to do is add extra deserializer which could handle the case of particular String values