Imagine a tool that did all of that for you. Everything about your code, the libraries and APIs you're using, their documentation, function signatures, return

Imagine a tool that did all of that for you. Everything about your code, the libraries and APIs you're using, their documentation, function signatures, return types and codes, all a simple keystroke away, without having to so much as glance away from the line of code you're on. And your code sneakily compiling itself in the background and reporting back anything that could potentially raise itself as an issue, run-time or compile time, presenting it all in the form of little red squigglies and gutter icons. Imagine writing an entire feature without ever having to alt-tab anywhere other than the end product (browser, app, whatever), and never needing to google anything at all. It'd be pretty cool, right? That's an IDE. This guy built one that lets you do all that stuff on a tablet.