Month: January 2023

[Solved] Accessing members in same namespace in C++ [closed]

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You can use forward declaration of your class second and use a pointer. Only the implementation must know the declaration of your class Second. namespace A { class Second; // Forward declaration class First { public: First(); ~First(); private: Second* s; // Pointer on a forward class }; class Second { private: First f; }; … Read more

[Solved] Naming columns in a data table in R

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I don’t word with data tables, but this is a solution that would work for data frames, and should hopefully generalize. The strategy is to use the fact that you can fill one vector with another vector, without ever having to use a loop. # make the example data sets D1 <- as.data.frame(matrix(data=(1:(20*181)), nrow=20, ncol=181)) … Read more

[Solved] JQuery .focus() not work in .blur() event in Firefox

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$(“#txtfname”).focus(function () { //Check if value is blank or not if ($(“#txtfname”).val() === “” && $(“#txtfname”).val().length >= 2) { $(“#fnamemsg”).hide(); // Hide message } }); var element = document.getElementById(‘txtfname’); element.focus(); element.onblur = function () { if (element.value !== “” && element.value.length < 2) { $(“#fnamemsg”).show(); $(“#fnamemsg”).html(“* Firstname required 2 character”); setTimeout(function () { element.focus(); }, … Read more

[Solved] Retrofit give null pointer exception

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When you have an error on your response, your response body is null. You have to use the code from the Response and if you want to get the data from the error use the errorBody(): public void onResponse(Call<SalaryListModel> call, Response<SalaryListModel> response) { if (response.isSuccessful()) { Log.e(TAG, “onResponse: calling”); if (response.body().getStatus_code() == 200) { Log.e(TAG, … Read more

[Solved] php form doesn’t post on the page

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First, your English is good. Second, there are a lot of things I would recommend working on before being concerned if it posts or not. mysql vs mysqli mysql extension depreciation warning mysql extensions have been depreciated, so you will want to use mysqli. The benefit of working with PHP is that the documentation is … Read more

[Solved] Relative File Path For a Picture

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Try, <img src=”https://stackoverflow.com/questions/47939821/Rezepte/GrilledFruitKebab.jpg”> Remember, Is the image in the same directory as the file referencing it? Is the image in a directory below? Is the image in a directory above? By “below” and “above”, I mean subdirectories and parent directories. Relative file paths give us a way to travel in both directions. Take a look … Read more

[Solved] Adding a styled CSS button

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Here a code snippet for the button. Add the css on the custom style of wordpress, and the class for the button in your menu item. Don’t be freaked about the font, it will get the font that is used in your theme. .menu-btn { background-color: #F7951E; color: #fff; padding: 6px 18px 3px !important; border-radius: … Read more