Duplicate output callbacks across Python and JavaScript namespaces fail if both set to allow_duplicate. They work, and allow parallel runs, if only one is enabled, and the other disabled. This may be ...

When to use callbacks? For easy tasks, callbacks are very good. If you only need to wait for one or two independent tasks, using a callback is quick and simple. For example, if you are waiting at the ...

Learn how to use JavaScript’s fs library module to create, read, write, and stream common file types in the JavaScript runtimes Node, Deno, and Bun.

Callbacks work fine for handling asynchronous code in JavaScript, but promises and the async and await keywords are cleaner and more flexible.

Are you unfamiliar with JavaScript? Have no idea what it is or does? Don't worry. This post will guide you through the key terms and fundamental concepts.

This example, using the JavaScript-like syntax, defines a function called GetNamePart that returns a string; the GetNamePart function also expects to be passed a Customer object (in a parameter called ...