counter

I'm trying to create a Data class whose objects each hold a unique ID. I want the 1st object's ID to be 1, the 2nd to be 2, etc. I must use a static int , but all the objects have the same ID, not 1, 2, 3... This is the Data class: class Data { private: static int ID; public: Data(){ ID++; } }; How can I do it so the first one ID would be 1, the second would be 2, etc..? This: class Data { private: static int ID; const int currentID; public: Data() : currentID(ID++){ } }; Besides a static counter, you also need an instance-bound member. If the ID is static, then it will have the same value for

I have a program where I'm keeping track of the success of various things using collections.Counter — each success of a thing increments the corresponding counter: import collections scoreboard = collections.Counter() if test(thing): scoreboard[thing]+ = 1 Then, for future tests, I want to skew towards things which have generated the most success. Counter.elements() seemed ideal for this, since it returns the elements (in arbitrary order) repeated a number of times equal to the count. So I figured I could just do: import random nextthing=random.choice(scoreboard.elements()) But no, that raises

I would like to add a small counter next to a button to show the remaining quantity for some items, for example, the remaining number of tips remaining unused. Targeted layout would be as shown: Question: I have researched the web and found that some say to use different pictures for each quantity. Yet how could it be solved if the quantity can be up to 100? Really necessary to draw such out? I am thinking of to stick 2 buttons together in a RelativeLayout such that when the user presses the bottom button, the top button will count up and down and setText itself, but are there some better

Is it possible to count how many times a certain link in post has been clicked? (for example purpose, let's say that the certain link has an ID named 'bla') <a id="bla" href="#">download</a> I got a feeling it should be possible by using custom-fields/post-meta (to keep the count), just like the ever-so-popular 'visitor count' trick. Unfortunately, I'm rather clueless about PHP s. It could be done with ajax call that updates post meta field before the link is followed. Example below registers ajax action for users that are not logged in, and increases link_click_counter custom field by 1 on

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 cannot successfully build an exception for the error I am receiving: ConnectionResetError: [Errno 54] Connection reset by peer Here is my code: try: for img in soup.findAll('img', {'class': 'thisclass'}): print('Image #:' + str(counter) + ' URL: ' + img['src']) myurl = img['src'] urllib.request.urlretrieve(str(myurl), str(mypath)+str(foldername)+'/webp/'+str(foldername)+str(counter)+'.webp') im = Image.open(str(mypath)+str(foldername)+'/webp/'+ str(foldername) +str(counter)+'.webp').convert("RGB") im.save(str(mypath)+str(foldername)+'/jpg/

Yield：是一个关键字，通过状态机实现，充分体现了延迟加载的特性。 下面是一个实例代码，运行一下，会发现Yield的神奇之处。 class Program { static void Main(string[] args) { { IEnumerable<int> results = CommonMethod(); results = YieldMethod(); } Console.WriteLine("*******************************"); { IEnumerable<int> results = CommonMethod(); foreach (var item in results) { Console.WriteLine(item); } } Console.WriteLine("*******************************"); { IEnumerable<int> results = YieldMethod(); foreach (var item in results) { Console.WriteLine(item); } } Console.ReadKey(); } public static IEnumerable<int> CommonMethod() { List<int> results = new