Can you pass a standard c# enum as a parameter? For example: enum e1 { //... } enum e2 { //... } public void test() { myFunc( e1 ); myFunc( e2 ); } public void myFunc( Enum e ) { // Iterate through all the values in e } By doing this I hope to retrieve all the names within any given enum. What would the Iterat...
As a follow on from this question. How can I call a function and pass in an Enum? For example I have the following code: enum e1 { //... } public void test() { myFunc( e1 ); } public void myFunc( Enum e ) { var names = Enum.GetNames(e.GetType()); foreach (var name in names) { // do something! } } ...
I happened to be making some changes to a WordPress blog and noticed that they use parse_str (http://php.net/parse_str) for parsing and setting their optional parameters to a function. I'm wondering if there is an advantage to this over sending an array? Examples: With array: $blahOptions = array( 'option_1' => true, ); BlahArra...
I need to be able to pass a typename as a parameter: int X = FileRead(file, 9, char); The concept is for FileRead(std::fstream, int pos, ???) to read pos*sizeof(whatever the type is) to get the desired position. I tried templates: template<typename T> T FileRead(std::fstream file, int pos, T type) { T data; file.read(reinter...
So, many times we have a function that accepts an IEnumerable or ICollection as a parameter. In cases where we have single items, but no collection to hold them, we must create a collection before passing them to the function, like: T o1, o2, o3; Foo(new T[] { o1, o2, o3 }); I've always created an array or a list, like I've done in th...
I'm trying to write a function to swap 2 elements in a 2D array: void swap(int surface[][], int x1, int y1, int x2, int y2) { int temp = surface[x1][y1]; surface[x1][y1] = surface[x2][y2]; surface[x2][y2] = temp; } however when I try to compile it (gcc), I get this error message: Sim_Annealing.c: In function `swap': Sim_...
I need to log all the function parameters in a dozen functions. Is there a way to pro grammatically determine all the parameters and their values (or at least their .ToString() value)? Perhaps via reflection? ...
Is it possible to create a PHP function that takes a variable number of parameters all of them by reference? It doesn't help me a function that receives by reference an array of values nor a function that takes its arguments wrapped in an object because I'm working on function composition and argument binding. Don't think about call-tim...
In Java you can access variables in a class by using the keyword this, so you don't have to figure out a new name for the parameters in a function. Java snippet: private int x; public int setX(int x) { this.x = x; } Is there something similar in C++? If not, what the best practice is for naming function parameters? ...
I have the following problem: I have a function which takes a List[Double] as parameter, performs some arithmetic operations on the elements of the list and than return the result. I would like the function also to accept List[Int]. Here is an example: def f(l: List[Double]) = { var s = 0.0 for (i <- l) s += i s } ...
I have a function that takes a const D3DVECTOR3 *pos, but I have no reason to declare this beforehand. The most logical solution to me was using new: Function( //other parameters, new D3DXVECTOR3(x, y, 0)); but I don't know how I would go about deleting it, beign intitialized in a function. My next thought was to use the & o...
Something like this (yes, this doesn't deal with some edge cases - that's not the point): int CountDigits(int num) { int count = 1; while (num >= 10) { count++; num /= 10; } return count; } What's your opinion about this? That is, using function arguments as local variables. Both are placed on the s...
I need a function which takes an arbitrary number of arguments (All of the same type), does something whith them and afterwards gives a result back. A list of arguments is impracticable in my specific case. As I looked through the haskell libs, there is the function printf from module Text.Printf, which uses a similar trick. Poorly I co...
hello , I have recently started working on OpenCV using c++.I am having a problem with the following code. #include "cv.h" #include "highgui.h" int g_slider_position = 0; CvCapture* g_capture = NULL; void onTrackbarSlide(int pos) { cvSetCaptureProperty( g_capture, CV_CAP_PROP_POS_FRAMES, pos ); } int main( int argc, ch...