size - w3toppers.com

vector size – 1 when size is 0 in C++

vector::size() is of type size_t which is an unsigned type, and unsigned integers can’t represent negative numbers.

C# “Parameter is not valid.” creating new bitmap

Keep in mind, that is a LOT of memory you are trying to allocate with that Bitmap. Refer to http://social.msdn.microsoft.com/Forums/en-US/netfxbcl/thread/37684999-62c7-4c41-8167-745a2b486583/ .NET is likely refusing to create an image that uses up that much contiguous memory all at once. Slightly harder to read, but this reference helps as well: http://www.tech-archive.net/Archive/DotNet/microsoft.public.dotnet.framework.drawing/2005-06/msg00176.html Each image in the system has … Read more

How to get the size of the current screen in WPF?

I created a little wrapper around the Screen from System.Windows.Forms, currently everything works… Not sure about the “device independent pixels”, though. public class WpfScreen { public static IEnumerable<WpfScreen> AllScreens() { foreach (Screen screen in System.Windows.Forms.Screen.AllScreens) { yield return new WpfScreen(screen); } } public static WpfScreen GetScreenFrom(Window window) { WindowInteropHelper windowInteropHelper = new WindowInteropHelper(window); Screen screen … Read more

How does this “size of array” template function work? [duplicate]

First let’s dissect the parameter, T(&)[size]. Read declarations from inside out, right to left, parenthesis group first: It’s an unnamed parameter that is a reference to an array of size size of type T. That is, it accepts a reference to any array, where the type and size of the array are template parameters. If … Read more

How do you stretch an image to fill a while keeping the image’s aspect-ratio?

Update 2016: Modern browser behave much better. All you should need to do is to set the image width to 100% (demo) .container img { width: 100%; } Since you don’t know the aspect ratio, you’ll have to use some scripting. Here is how I would do it with jQuery (demo): CSS .container { width: … Read more

How many bytes in a JavaScript string?

This function will return the byte size of any UTF-8 string you pass to it. function byteCount(s) { return encodeURI(s).split(/%..|./).length – 1; } Source JavaScript engines are free to use UCS-2 or UTF-16 internally. Most engines that I know of use UTF-16, but whatever choice they made, it’s just an implementation detail that won’t affect … Read more

Scale the ImageIcon automatically to label size

This is a tricky question. You highlight the fact that you are using a JLabel to show the image, which is the standard way of doing things, but, JLabel is a complex little beast, with text, icon and text alignment and positioning. If you don’t need all that extra functionality, I would simply create yourself … Read more

Set variable text column width in printf

You can do this as follows: printf(“%*d”, width, value); From Lee’s comment: You can also use a * for the precision: printf(“%*.*f”, width, precision, value); Note that both width and precision must have type int as expected by printf for the * arguments, type size_t is inappropriate as it may have a different size and … Read more

Can someone explain this template code that gives me the size of an array? [duplicate]

Well, first you have to understand that trying to get a value out of an array can give you a pointer to its first element: int a[] = {1, 2, 3}; int *ap = a; // a pointer, size is lost int (&ar)[3] = a; // a reference to the array, size is not lost … Read more