namespaces

printf with std::string?

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It’s compiling because printf isn’t type safe, since it uses variable arguments in the C sense1. printf has no option for std::string, only a C-style string. Using something else in place of what it expects definitely won’t give you the results you want. It’s actually undefined behaviour, so anything at all could happen. The easiest way to fix this, since … Read more

How to add reference to System.Web.Optimization for MVC-3-converted-to-4 app

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UpdateVersion 1.1.x is available, read the release notes: https://www.nuget.org/packages/Microsoft.AspNet.Web.Optimization The Microsoft.Web.Optimization package is now obsolete. With ASP.NET (MVC) 4 and higher you should install the Microsoft ASP.NET Web Optimization Framework: Install the package from nuget:Install-Package Microsoft.AspNet.Web.Optimization Create and configure bundle(s) in App_Start\BundleConfig.cs:public class BundleConfig { public static void RegisterBundles(BundleCollection bundles) { bundles.Add(new ScriptBundle(“~/Scripts/jquery”).Include( “~/Scripts/Lib/jquery/jquery-{version}.js”, “~/Scripts/Lib/jquery/jquery.*”, “~/Scripts/Lib/jquery/jquery-ui-{version}.js”) ); … Read more

What are namespaces?

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Namespacing does for functions and classes what scope does for variables. It allows you to use the same function or class name in different parts of the same program without causing a name collision. In simple terms, think of a namespace as a person’s surname. If there are two people named “John” you can use their … Read more

What does if __name__ == “__main__”: do?

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Short Answer It’s boilerplate code that protects users from accidentally invoking the script when they didn’t intend to. Here are some common problems when the guard is omitted from a script: If you import the guardless script in another script (e.g. import my_script_without_a_name_eq_main_guard), then the second script will trigger the first to run at import … Read more

What does if __name__ == “__main__”: do?

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Short Answer It’s boilerplate code that protects users from accidentally invoking the script when they didn’t intend to. Here are some common problems when the guard is omitted from a script: If you import the guardless script in another script (e.g. import my_script_without_a_name_eq_main_guard), then the second script will trigger the first to run at import … Read more