How to convert Integer[] to int[] array in Java?
You can use Stream APIs of Java 8 int[] intArray = Arrays.stream(array).mapToInt(Integer::intValue).toArray();
wrapper
Simple way to get wrapper class type in Java
Apache Commons Lang has a utility method to do this (ClassUtils.primitiveToWrapper()), which will be just as ugly under the covers, but at least you can pretend it’s nice.
Wrapping FILE* with custom std::ostream
As Ben Voigt points out, you want to subclass streambuf. There are pages on the University of Southern California’s website which have the documentation, header, and source for a GNU implementation of a streambuf subclass (stdiobuf) that wraps a FILE*. It has some dependencies on the library it is a part of (GroovX), but those … Read more
Objective-C Wrapper for CFunctionPointer to a Swift Closure
I needed to define this callback: typedef void (*MIDIReadProc) ( const MIDIPacketList *pktlist, void *readProcRefCon, void *srcConnRefCon ); and I wanted to use Objective-C as least as possible. This was my approach: MIDIReadProcCallback.h #import <Foundation/Foundation.h> #import <AudioToolbox/AudioToolbox.h> typedef void (^OnCallback)(const MIDIPacketList *packetList); @interface MIDIReadProcCallback : NSObject + (void (*)(const MIDIPacketList *pktlist, void *readProcRefCon, void *srcConnRefCon))midiReadProc; … Read more
Differences between ServletResponse and HttpServletResponseWrapper?
BalusC’s answer is good, but it might be a little overwhelming if you’re just starting out. Put simply: SerlvetResponse and its extension, HttpServletResponse, are interfaces telling you what methods are available to call to do the things you need. In the normal course of working with Filters, Servlets, et al., you’ll use HttpServletResponse often to … Read more
Tesseract 3 (OCR) – .NET Wrapper
It appeared to be the contents of the tessdata folder that was causing the problem. Obtained the tessdata folder from the first link and all is now working.
/LinkResource in Visual Studio 2010
I managed to get this to work in vs2010 albeit with warnings. 1) Override CoreCompile to add LinkResources 2) Add a target to get the equivalent of Copy Local on anything added as <LinkResource Include=”native.dll” /> 3) If the project containing the native libraries/file only contains those files, add a type/interface. Use this type in … Read more
C++ Class wrapper around fundamental types
1) Is there any additional function calling overhead when using someClass.operator+() No, if the function body is small and in the header, it will be inlined, and have no overhead 2) Is there a way to automatically make the compiler cast the floatWrapper to a float? struct floatWrapper { floatWrapper(float); //implicit conversion from float operator … Read more
Can you alter a Javascript function after declaring it?
You can do all kinds of fun stuff with javascript, including redefining functions: let a = function() { return 1; } console.log(a()); // 1 // keep a reference let old = a; // redefine a = function() { // call the original function with any arguments specified, storing the result const originalResult = old.apply(old, arguments); … Read more
When using wrapper, how to preserve class and method name for Log4Net to log?
Log4net allows you to access method name for instance like this %method. This is not the fastest operation but if you need to debug something you may very well use it. I believe your question is about the fact that log4net will not output the correct method name if you use a wrapper. To solve … Read more