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The Programmer Blog is here to help you, the programmer. We do our best to provide useful resources that offer explanations to popular programming problems, across a variety of programming languages. If you would like to suggest a blog topic or have a question, please leave us a message.

What is a NullPointerException, and how do I fix it?

A NullPointerException is a common error in Java and other programming languages. It occurs when you try to use a reference variable that has a null value. In other words, you are trying to call a method or access a field on an object that doesn't exist. Here's an example of how a NullPointerException can occur in Java: String name...

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How do you format code in Visual Studio Code (VSCode)?

Here are a few ways to format code in Visual Studio Code (VSCode): Using the built-in formatting shortcut: If your code is in a supported language, you can use the built-in formatting shortcut to format the code. The shortcut is usually Shift + Alt + F on Windows and Shift + Option + F on Mac. Alternatively, you can right-click in...

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Setting "checked" for a checkbox with jQuery

To check a checkbox using jQuery, you can use the prop() method to set the checked property to true. Here's an example: // Assuming the checkbox has an ID of "myCheckbox" $('#myCheckbox').prop('checked', true); This will set the checked property of the checkbox to true, which will cause it to become checked in the UI. Note that if you want to...

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How to clone a specific branch without switching branches on the remote repository?

You can clone a specific branch from a remote repository without switching branches on the remote repository by using the --branch or --single-branch option with the git clone command. Here's how you can clone a specific branch using the --branch option:git clone -b <branch-name> <remote-repo-url> For example, to clone the develop branch from the remote repository, you can use...

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How do I see the type of a variable? (e.g. unsigned 32 bit)

The method for determining the type of a variable depends on the programming language you are using. Here are a few examples: C and C++ find variable type You can use the sizeof operator to determine the size of a variable in bytes. For example, if you have a variable x of type unsigned int, you can use the sizeof...

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