How can I POST data to a url using QNetworkAccessManager

Since some parameters and values might need to be utf-8 and percent encoded (spaces, &, =, special chars…), you should rather use QUrl (for Qt 4) or QUrlQuery (for Qt 5) to build the posted string. Example code for Qt 4: QUrl postData; postData.addQueryItem(“param1”, “string”); postData.addQueryItem(“param2”, “string”); … QNetworkRequest request(serviceUrl); request.setHeader(QNetworkRequest::ContentTypeHeader, “application/x-www-form-urlencoded”); networkManager->post(request, postData.encodedQuery()); and … Read more

Use the long reserved word as a variable name in C#

Yes, you can if you really want to: private string @long; The actual name of the variable (as reported by reflection etc) is just long; the @ sign tells the compiler to ignore the fact that it’s also a keyword. I would very strongly advise against this, however.

Why is my power operator (^) not working?

Well, first off, the ^ operator in C/C++ is the bit-wise XOR. It has nothing to do with powers. Now, regarding your problem with using the pow() function, some googling shows that casting one of the arguments to double helps: result = (int) pow((double) a,i); Note that I also cast the result to int as … Read more

PHP check file extension [duplicate]

pathinfo is what you’re looking for $file_parts = pathinfo($filename); switch($file_parts[‘extension’]) { case “jpg”: break; case “exe”: break; case “”: // Handle file extension for files ending in ‘.’ case NULL: // Handle no file extension break; }

How to create a circular button in Swift? [closed]

Here is an example round button: Swift 3, 4, 5: override func viewDidLoad() { super.viewDidLoad() let button = UIButton(type: .custom) button.frame = CGRect(x: 160, y: 100, width: 50, height: 50) button.layer.cornerRadius = 0.5 * button.bounds.size.width button.clipsToBounds = true button.setImage(UIImage(named:”thumbsUp.png”), for: .normal) button.addTarget(self, action: #selector(thumbsUpButtonPressed), for: .touchUpInside) view.addSubview(button) } @objc func thumbsUpButtonPressed() { print(“thumbs up button … Read more

When to use Request.Cookies over Response.Cookies?

They are 2 different things, one SAVES [Response], the other READS [Request] in a Cookie (informatics speaking) 🙂 you save a small file for a period of time that contains an object of the type string in the .NET framework you save a cookie doing: HttpCookie myCookie = new HttpCookie(“MyTestCookie”); DateTime now = DateTime.Now; // … Read more

Problems after copying XAML controls from WPF Application to a class library

When you copy and paste files either within a project or to another project, Visual Studio has a nasty habit of not keeping the same BuildAction property. It often changes the build action to a seemingly random value, e.g. ApplicationDefinition, which causes that build error. Check (in the Visual Studio properties window with the file … Read more