array

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: In the context of this question , I though about how one could implement a property or method that counts across all nesting levels in collections. Intuitively, something this should work: extension Collection { var flatCount: Int { if self.count == 0 { return 0 } else if self.first is Collection { // .Iterator.Element: Collection return self.reduce(0) { (res, elem) -> Int in res + (elem as! Collection).flatCount // ERROR } } else { return self.reduce(0) { (res,_) in res + 1 } } } } However, we are not allowed to cast values to protocol

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I am trying to code in python opencv-2.4.3, It is giving me an error as below Traceback (most recent call last): File "/home/OpenCV-2.4.3/cam_try.py", line 6, in cv2.imshow('video test',im) error: /home/OpenCV-2.4.3/modules/core/src/array.cpp:2482: error: (-206) Unrecognized or unsupported array type in function cvGetMat I am not understanding what does that mean, Can anybody help me out? Thankyou. 回答1: The relevant snippet of the error message is Unrecognized or unsupported array type in function cvGetMat . The cvGetMat() function converts

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: jQuery 1.5 adds "Deferred Objects". What are they, and what exactly do they do? 回答1: Deferred Object As of jQuery 1.5, the Deferred object provides a way to register multiple callbacks into self-managed callback queues, invoke callback queues as appropriate, and relay the success or failure state of any synchronous or asynchronous function. Deferred Methods: deferred.done() Add handlers to be called when the Deferred object is resolved. deferred.fail() Add handlers to be called when the Deferred object is rejected. deferred.isRejected()

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I am trying to verify a bytearray with Image.open and Image.verify() without writing it to disk first and then open it with im = Image.open() . I looked at the .readfrombuffer() and .readfromstring() method, but there I need the size of the image (which I could only get when converting the bytestream to an image). My Read-Function looks like this: def readimage(path): bytes = bytearray() count = os.stat(path).st_size / 2 with open(path, "rb") as f: print "file opened" bytes = array('h') bytes.fromfile(f, count) return bytes Then as a basic

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I have a class such as: class dialog { public: double dReturnType[][5][3]; }; #include #include include using namespace std; #include "dialog.h"; int main(int argc, char *argv[]) { dialog People; People.dReturnType[0][1] = {1.2,2.3,6.6}; return 0; } It returns: [Warning] extended initializer lists only available with -std=c++11 or -std=gnu11 [enabled by default] [Error]: assigning to an array from an initializer list I've looked it up online a bit and really couldn't find a way to get around this. I'd prefer not editing the class within it's

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I have a unit test where I have statically defined a quite large byte array (over 8000 bytes) as the byte data of a file I don't want to read every time I run my unit test. private static final byte[] FILE_DATA = new byte[] { 12,-2,123,................ } This compiles fine within Eclipse, but when compiling via Ant script I get the following error: [javac] C:\workspace\CCUnitTest\src\UnitTest.java:72: code too large [javac] private static final byte[] FILE_DATA = new byte[] { [javac] ^ Any ideas why and how I can avoid this? Answer : Shimi's

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I went through these threads: Find unique rows in numpy.array Removing duplicates in each row of a numpy array Pandas: unique dataframe and they all discuss several methods for computing the matrix with unique rows and columns. However, the solutions look a bit convoluted, at least to the untrained eye. Here is for example top solution from the first thread, which (correct me if I am wrong) I believe it is the safest and fastest: np.unique(a.view(np.dtype((np.void, a.dtype.itemsize*a.shape[1])))).view(a.dtype).reshape(-1, a.shape[1]) Either

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: If i had an array of days names and i wanted to check for example if sunday - first letter capital or small - in this array what would be the best thing to do ? 回答1: You may also use Array.indexOf : var days = ["monday", "tuesday", "wednesday", "thursday", "friday", "saturday", "sunday"]; function isInArray(days, day) { return days.indexOf(day.toLowerCase()) > -1; } isInArray(days, "Sunday"); // true isInArray(days, "sunday"); // true isInArray(days, "sUnDaY"); // true isInArray(days, "Anyday"); // false Check the browser compatibility in

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 由 翻译 强力驱动 问题: I've looked around for a good example of this, but I haven't run into one yet. I want to pass a custom string array from java to oracle and back, using the IBATIS framework. Does anyone have a good link to an example? I'm calling stored procs from IBATIS. Thanks 回答1: You've got to start with a custom instance of TypeHandler . We'd prefer to implement the simpler TypeHandlerCallback , but in this scenario we need access to the underlying Connection . public class ArrayTypeHandler implements TypeHandler { public void setParameter (

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I'm having troubles creating a property of an array of integers in Objective C. I'm not sure whether this is even possible to do in Obj-C so I'm hoping someone can help me in finding out either how to do it correctly or provide an alternative solution. myclass.h @interface myClass : NSObject { @private int doubleDigits[10]; } @property int doubleDigits; @end myclass.m @implementation myClass @synthesize doubleDigits; -(id) init { self = [super init]; int doubleDigits[10] = {1,2,3,4,5,6,7,8,9,10}; return self; } @end When I build and run, I