wrapper

问题 I'm not sure if I labelled my question correct, but I give it a shot: I want to use a package with a function which uses an ellipsis, func(...) . All my arguments of class My_Class are in a list. As I have quite a lot of arguments, I'd like to avoid func(arg1, arg2, arg3) . So ideally I'd like to do func( my_list ) . The problem is that the function looks like this function(...) { cl <- match.call(expand.dots = FALSE) names <- lapply(cl[[2]],as.character) ev <- parent.frame() classes <-

问题 I have a struct in c++: struct some_struct{ uchar* data; size_t size; } I want to pass it between manged(c#) and native(c++). What is the equivalent of size_t in C# ? P.S. I need an exact match in the size because any byte difference will results in huge problem while wrapping EDIT: Both native and manged code are under my full control ( I can edit whatever I want) 回答1: There is no C# equivalent to size_t . The C# sizeof() operator always returns an int value regardless of platform, so

问题 Given the following C library with a callback event that ask to set a buffer, how to write a proper C++/CLI wrapper in a type safe manner? // The callback signature typedef void (__cdecl *BUFFERALLOCATOR)(void *opaque, void **buffer); // A struct that contains the context of the library struct lib_context_base_s { // The stored callback function pointer BUFFERALLOCATOR buffer_allocator; // Opaque pointer that contain the local context. Needed in C because // C doesn't have closures (functions

问题 I am trying to create an alias (named which ) of the Get-Command cmdlet in a way that it doesn't run if I'm not sending any arguments (because if it's run without arguments it outputs all the commands that are available). I know this can be done using a function but I would like to keep the tab completion functionality without having to write a sizeable function that is to be placed into my $PROFILE. In short, I only want the alias to work if it is being passed arguments. 回答1: You can't do it

问题 I am trying to create an alias (named which ) of the Get-Command cmdlet in a way that it doesn't run if I'm not sending any arguments (because if it's run without arguments it outputs all the commands that are available). I know this can be done using a function but I would like to keep the tab completion functionality without having to write a sizeable function that is to be placed into my $PROFILE. In short, I only want the alias to work if it is being passed arguments. 回答1: You can't do it

问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed last year . I'm looking for a GUI toolkit to use in conjunction with OpenGL. QT looks promising but unfortunately it wraps most OpenGL functions in QT classes. Is there any way for me to create an OpenGL 3.3 context in QT and just use the standard C API? 回答1: There's no need for you to use most of the QT specific OpenGL

问题 I'm writing a wrapper around a C mathematical library. Every function takes one or two functions as arguments. However, the arguments for those child functions (as well as the parent functions) are not Swifty -hence the wrapper. I've cleaned up the example code to just show the three main pieces: the c-library function, the desired Swift function that would be passed to the wrapper (body not shown, but wrapping around the c-library function), and the required C function form. //C library

问题 We use a library provided by another internal team. (Shaky analogy starts now) from externalTeam import dataCreator datacreator.createPizza() datacreator.createBurger() datacreator.createHotDog() Recently we found a single method of theirs was taking over a minute to execute in certain situations. To debug this, I had to go into our code and add timeouts around every call of this method. import time from externalTeam import dataCreator start = time.clock() datacreator.createPizza() stop =

问题 Any helper class anywhere which wrapps kernel32 APIs, with all functions-methods and structures? Or any wrapper generator? I want ALL methods of kernel32.dll in C# like this: [DllImport("kernel32.dll",EntryPoint="RtlMoveMemory")] public static extern void RtlMoveMemory(int des, int src, int count); [DllImport("kernel32.dll", EntryPoint = "OpenProcess")] public static extern IntPtr OpenProcess(uint dwDesiredAccess, bool bInheritHandle, uint dwProcessId); [DllImport("kernel32", CharSet =

问题 I am writing a simple SFTP client in PHP because we have the need to programatically retrieve files via n remote servers. I am using the PECL SSH2 extension. I have run up against a road block, though. The documentation on php.net suggests that you can do this: $stream = fopen("ssh2.sftp://$sftp/path/to/file", 'r'); However, I have an ls method that attempts to something similar public function ls($dir) { $rd = "ssh2.sftp://{$this->sftp}/$dir"; $handle = opendir($rd); if (!is_resource($handle