Your comments are making me bristle a little bit, but to be honest the book being referenced by the blog post makes me bristle more. "You may use the “harmful”

Your comments are making me bristle a little bit, but to be honest the book being referenced by the blog post makes me bristle more. "You may use the “harmful” examples as templates to search for in your own code. When you find code like that, replace it with the idiomatic version." This is a really dumb idea, especially when paired with the incorrect implementations that the book author encourages and the blog poster critiques. Incorrect code is never idiomatic, full stop.