size

问题 This question already has answers here : When a function has a specific-size array parameter, why is it replaced with a pointer? (3 answers) Closed 6 years ago . i know there are several threads asking a similar question but i couldn't find a solution and i'm somewhat new to c++. I want to calculate the length of a DWORD array. So it's just an unsigned long. DWORD offsets[] = {0x378, 0x14, 0x0}; This is my header definition of the func: DWORD allocateAddress(DWORD, DWORD[]); This is inside

问题 I have a MS-Visual Studio 2005 workspace having all c code. This application(exe) allocates memory dynamically from heap using malloc and realloc. I want to calculate the maximum size allocated size allocated on heap using malloc/realloc by this application program when i run particular test case. I do not want to change the code by noting the malloc sizes and accumulating them, because: a) there can be a scenario, that some memory of 1KB is malloc'ed, then freed, and then a memory of 2KB is

问题 I want the tabs in my tabpane to fit the complete size of the tabpane which they are in. So basically there shall be no header area visible, everything should be covered by the tabs. I have 2 problems here: How can I make the tabs dynamically fit the width of the tabpane? How can I fit them to the correct height, and remove the little spaces between the tabs? I suppose this is done via css, but I don't quite know how. greets 回答1: You can simply add a listener to the TabPane to detect any

问题 This question already has answers here : In C++ books, array bound must be constant expression, but why the following code works? (2 answers) Closed 3 years ago . For some reason, in the past, I recall not being able to do something like: int arraySize; cin >> arraySize; int array[arraySize]; But recently, I tried this again and its not causing any issues. I could've sworn before this was something that threw an error in my compiler (macOS Sierra, Xcode 8.1). Was anything in the language

问题 here's my problem: How can get the displayed size of the drawable inside an ImageView in pixel after scalling, assuming that the ImageView size isn't equal to the scaled drawable? A lot of methods just return the original size of the Drawable or just the size of the ImageView. Here is a picture describing what I want : http://image.noelshack.com/fichiers/2013/06/1360144144-sans-titre.png 1 --> ImageView Size 2 --> The scaled image size that I want to get in px Thank you. 回答1: From the image

问题 I simply copied my image and saved it to another temp folder in the current directory, nothing is modified, but the image size is somehow reduced... why? from PIL import Image import os image_path = "/Users/moomoochen/Desktop/XXXXX.jpg" img = Image.open(image_path) pathname, filename = os.path.split(image_path) new_pathname = (pathname + "/temp") if not os.path.exists(new_pathname): os.makedirs(new_pathname) img.save(os.path.join(new_pathname, filename)) The image size is reduced quite a bit,

问题 please tell me how to get image file size in bytes using javascript. Thanks 回答1: If javascript engine supports canvas elements you can try to use canvas element and getImageData to fetch the pixel data from your image. Then, depending on type of the image you could create the binary representation of this image. Here is info about canvas element and getImagedata api: http://www.whatwg.org/specs/web-apps/current-work/#dom-context-2d-getimagedata 回答2: To get the image size, you need to access

问题 Here is the code: import javax.swing.*; import java.awt.event.*; import java.awt.*; public class TestGrid { public static void main(String[] args) { JFrame frame = new JFrame("Colored Trails"); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); JPanel mainPanel = new JPanel(); mainPanel.setLayout(new BoxLayout(mainPanel, BoxLayout.Y_AXIS)); JPanel panel = new JPanel(); panel.setLayout(new GridLayout(4, 9)); panel.setMaximumSize(new Dimension(9*30-20,4*30)); JButton btn; for (int i=1; i<=4;

问题 Is there a way of fixing the size of a vector and still changing the contents? I have tried making a const vector const std::vector<int> vec(10); but that prevents me from changing the values. vec[3] = 3; gives a compiler error: assignment of read-only location. I have also tried with a const reference to a non-const vector std::vector<int> vec(10); const std::vector<int>& vecref(vec); which gives the same compiler error. I want to be able to fix the vector size either on declaration or after

问题 Is the in operator's speed in python proportional to the length of the iterable? So, len(x) #10 if(a in x): #lets say this takes time A pass len(y) #10000 if(a in y): #lets say this takes time B pass Is A > B? 回答1: A summary for in: list - Average: O(n) set/dict - Average: O(1), Worst: O(n) See this for more details. 回答2: There's no general answer to this: it depends on the types of a and especially of b . If, for example, b is a list, then yes, in takes worst-case time O(len(b)) . But if,