python 2.7 and opencv code gives cvtcolor error

Issue faceCascade = cv2.CascadeClassifier(‘haarcascade_frontalface_default.xml’) video_capture = cv2.VideoCapture(0) while True: ret, frame = video_capture.read() gray = cv2.cvtColor(frame, cv2.COLOR_BGR2GRAY) faces = faceCascade.detectMultiScale( frame, scaleFactor=1.1, minNeighbors=5, minSize=(30, 30), flags=cv2.cv.CV_HAAR_SCALE_IMAGE ) # Draw a rectangle around the faces for (x, y, w, h) in

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c++ using-keyword in python

Issue In c++ you generally can do this: using LCN = longNamespace::sub::subsub::LongClassName so you don’t have to write a long classname everytime. Is there a similar keyword or workaround in python for static classmethods. class MyPythonClassWithLongName: @staticmethod def foo(): pass

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Is this the right usage of using?

Issue I am not sure how to use using statement correct. I try like this: [HttpDelete("{ClubId}", Name = "DeleteOpenings_Club")] public async Task<IActionResult> DeleteClub_IsOpening([FromRoute] string ClubId) { using (_db_ClubIsOpen) { var result = _db_ClubIsOpen.ClubIsOpen_TBL.Where(x => x.FK_Club == ClubId); foreach (var item

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Is this the right usage of using?

Issue I am not sure how to use using statement correct. I try like this: [HttpDelete("{ClubId}", Name = "DeleteOpenings_Club")] public async Task<IActionResult> DeleteClub_IsOpening([FromRoute] string ClubId) { using (_db_ClubIsOpen) { var result = _db_ClubIsOpen.ClubIsOpen_TBL.Where(x => x.FK_Club == ClubId); foreach (var item

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Is this the right usage of using?

Issue I am not sure how to use using statement correct. I try like this: [HttpDelete("{ClubId}", Name = "DeleteOpenings_Club")] public async Task<IActionResult> DeleteClub_IsOpening([FromRoute] string ClubId) { using (_db_ClubIsOpen) { var result = _db_ClubIsOpen.ClubIsOpen_TBL.Where(x => x.FK_Club == ClubId); foreach (var item

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Is this the right usage of using?

Issue I am not sure how to use using statement correct. I try like this: [HttpDelete("{ClubId}", Name = "DeleteOpenings_Club")] public async Task<IActionResult> DeleteClub_IsOpening([FromRoute] string ClubId) { using (_db_ClubIsOpen) { var result = _db_ClubIsOpen.ClubIsOpen_TBL.Where(x => x.FK_Club == ClubId); foreach (var item

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Is this the right usage of using?

Issue I am not sure how to use using statement correct. I try like this: [HttpDelete("{ClubId}", Name = "DeleteOpenings_Club")] public async Task<IActionResult> DeleteClub_IsOpening([FromRoute] string ClubId) { using (_db_ClubIsOpen) { var result = _db_ClubIsOpen.ClubIsOpen_TBL.Where(x => x.FK_Club == ClubId); foreach (var item

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Is this the right usage of using?

Issue I am not sure how to use using statement correct. I try like this: [HttpDelete("{ClubId}", Name = "DeleteOpenings_Club")] public async Task<IActionResult> DeleteClub_IsOpening([FromRoute] string ClubId) { using (_db_ClubIsOpen) { var result = _db_ClubIsOpen.ClubIsOpen_TBL.Where(x => x.FK_Club == ClubId); foreach (var item

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Using a returned instance?

Issue I have a hierarchy of classes that perform API requests. In the base class, I build the request object, and in some subclasses, this method is overridden. Base class: protected virtual HttpRequestMessage BuildRequest(HttpMethod method, Uri uri, HttpContent content =

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XamlParseException: Could not load file or assembly 'ResourceLibrary, …' or one of its dependencies. The system cannot find the file specified

Issue System.Windows.Markup.XamlParseExceptionoccurred A first chance exception of type ‘System.Windows.Markup.XamlParseException’ occurred in PresentationFramework.dll Additional information: ‘Set property ‘System.Windows.ResourceDictionary.Source’ threw an exception.’ Line number ’21’ and line position ‘6’. “Could not load file or assembly ‘ResourceLibrary, Culture=neutral’ or one of its dependencies.

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C# 8 understanding await using syntax

Issue I have next method: public async Task<IEnumerable<Quote>> GetQuotesAsync() { using var connection = new SqlConnection(_connectionString); var allQuotes = await connection.QueryAsync<Quote>(@”SELECT [Symbol], [Bid], [Ask], [Digits] FROM [QuoteEngine].[RealtimeData]”); return allQuotes; } Everything fine and clear, connection will be disposed at the

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'ExecuteNonQuery requires an open and available Connection. The connection's current state is closed.' – C#

Issue The code: private void btnSave_Click(object sender, EventArgs e) { using (con = new SqlConnection(connectionString)) { SqlCommand cmd; switch (action) { case ‘a’: cmd = new SqlCommand("INSERT INTO tbl_User (userName, userPass) Values (@username, @userpass)", con); cmd.CommandType = CommandType.Text; cmd.Parameters.AddWithValue("@username", txtUN.Text.Trim());

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Best way to alias expression

Issue I’m writing a program in C++, and at one part I want the program to sleep for 1 second. I’m using the following expression to be platform independent: std::this_thread::sleep_for(std::chrono::duration<int, std::milli>(1000)); This line is way too long, so I want

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How to naming namespaces for product that have sub-products/modules?

Issue I read that carefully. And yes very helpful! https://learn.microsoft.com/en-us/dotnet/standard/design-guidelines/names-of-namespaces Assuming you have following products and namespaces Microsoft.Dynamics.Inventory is a DLL Microsoft.Dynamics.Bank is a DLL Each of above have (Views, Reports, Utils, etc) Microsoft.Dynamics.Inventory.DLL Should I go for that? Microsoft.Dynamics.Inventory.Sales.Reports

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