KiratIntroduction [ad_1] When calculating the difference between two dates, you may encounter the error “undefined method `round’ for nil:NilClass”. This error occurs when the difference between the two dates is nil, meaning that the two dates are the same. This error can be solved by checking if the difference between the two dates is nil … Read more
[ad_1] The problem is that the value you are attempting to assign to list1 is a Set, but the list1 var is of type List. The compiler error explains this as best it can, but perhaps the error message is a bit obscure because the right hand side of the assignment could take many types … Read more
[ad_1] You should use dp[count] insted of dp[count+1] in this line: dp[count+1] = new DataPoint(count+1, db.getDetails().getWeight()); because indices in dp will be 0 to count [ad_2] solved Array[index + 1] causing the program FATAL error [duplicate]
[ad_1] You made variable with name that matches type name (string variable, string type?). Plus there is issue that you return pointer to object with local scope of life. That is UB. Using iterators your function would work like this: const string shortest_string(initializer_list<string> strings) { if(!strings.size()) return string(); auto shortest_one = strings.begin(); for (auto it … Read more
[ad_1] There are multiple ways to approach this problem (REST, WebSocket, etc.) I recommend using sockets in this case but I’ll leave it up to you to read up on the pros/cons of different approaches. Socket.IO has a popular Android library for real-time bidirectional event-based communication between two nodes. At a high level, to use … Read more
[ad_1] You can host the application locally and access it through your browser as localhost/myapp Take a look at WAMP. It should set you up with the things you need to host locally. Once you come online, you can run a script that will diff your local mySQL database with your remote and sync changes. … Read more
[ad_1] I think in your code you are comparing two strings using equals function like String1.equals(String2) in your case String1 is null (not initialized), and it is the root cause of this exception. For example: String string1 = getInputText(); boolean status = false; if(string1 != null) { status = string1.equals(string2); } So please check and … Read more
[ad_1] Your code has a few issues: Don’t mix more than one library. You are using mysql_ and mysqli_ together. Don’t use mysql_* functions. They are deprecated. No need of mysqli_close() function. You don’t need to repeat the table. You are not printing anything from the query’s result. The problem with your code is, you … Read more
[ad_1] The problem here is not how you call yea, it is everything around it. This would be fine: append( some_string + yea() + some_string ); … but where you should have strings (which could be string literals or variables or any other JavaScript expression), you have raw HTML, which isn’t allowed. You seem to … Read more
[ad_1] The type of level in the function signature must match the type you call it with, in this particular case char level[][28]. 1 [ad_2] solved 2d array pointer not apply to both dimensions
[ad_1] maybe is the best to load all .mat files which contain parameters you want to use for training of neural network and put all your input parameters into one variable, and than to use that variable as the input for neural network. [ad_2] solved Training neural network in matlab
[ad_1] Using Canvas you can capture the video Thumb. here is the working example. function thumbnail(){ var canvas = document.getElementById(‘canvas’); var video = document.getElementById(‘video’); canvas.getContext(‘2d’).drawImage(video, 0, 0, video.videoWidth, video.videoHeight); } document.getElementById(‘capture’).addEventListener(‘click’, function(){ thumbnail(); }); <button id=”capture”> capture </button> <canvas id=”canvas”></canvas> <video width=”320″ height=”240″ id=”video” controls> <source src=http://techslides.com/demos/sample-videos/small.ogv type=video/ogg> <source src=http://techslides.com/demos/sample-videos/small.mp4 type=video/mp4> Your browser does not … Read more
[ad_1] Is regex necessary for this? substring() gets you want you want easily. Update I saw a comment where you’re also wanting a case where the data looks like, “0|0|0|0|abdc|ghyft|rtyu”. I’ve modified my answer to account for that case and a case where the data could be, “0|0|0|0|abdc|ghyft|rtyu|0|0|0|” Either way: public static void main(String[] args) … Read more
[ad_1] That’s because Thread.join() doesn’t release any locks. You’ve designed a perfectly working deadlock, where Thread-1 is waiting for Thread-2 to die having locked on Foo, and Thread-2 is waiting to lock on Foo. (Technically speaking the current implementation does release locks, as it uses internally wait() while synchronized on Thread. However that’s an internal … Read more
[ad_1] Try this sample program and build up on it: #include <iostream> #include <fstream> #include <string> using namespace std; int main(void) { ifstream infile; infile.open(“football.txt”, ios::in); if (!infile) { cout<<“File does not exist”; return EXIT_FAILURE; } std::string text_from file; while (getline(infile, text_from_file)) { cout << text_from_file << “\n”; } cout << “Paused. Press enter to … Read more