OpenBSD-current now runs as guest under Apple Hypervisor

Let's write a macro in Rust - Part 1

Macros are required to do some very helpful things in Rust, but this isn’t an article about any of those things. I became enamored with macros many years ago when I read Practical Common Lisp and saw the implementation of a SQL DSL that works with built in data structures. The whole implementation took less than a screen of code and absolutely blew away my expectations of what it took to create DSLs.

A Perplexing Javascript Parsing Puzzle

What does this print? x = 1 x --> 0 Think it through, then try it in a browser console! Answer and explanation in the dropdown. Show answer It prints 1. wait wtf At the beginning of a line (and only at the beginning of a line), --> starts a comment. The JavaScript is parsed as x=1; x; // 0 The browser then displays the value of the last expression, which of course is 1.