Pry is an interactive console, like IRB, which can be used to pause execution and inspect the current scope in your Rails web requests or tests. I'm going to show you how simple it is to drop it into your Rails apps and get better visibility over bugs.
TL;DR
Compile and run rust programs with one simple bash script, i.e.
rust program.rs.
Over recent years we've seen the software community debate the usefulness of comments (this article being an example), and rightly so. The main argument is against explanatory comments, i.e. "this code is doing X", as the ideal situation is that the code is written in a way that means it's readable and self-explanatory. The problem with comments like this is that they easily become out of date, as someone makes a quick change to the code without reading and updating the associated comment. You then have the issue of a comment which directly contradicts the code it's meant to be explaining.
Git is such a complex tool that I often feel as if I'm barely using 10% of it's complete functionality. The various commands range from the absolutely essential (commit, push, pull) to the more exotic (cherry-pick, rebase), to the downright obscure or scary (fsck, merge-octopus, quiltimport). You can generally get by with knowing the basic functions of a small set of commands, that allow you to push, pull, commit, change branches and merge. However, this list compiles 6 commands that you may not know about that have seriously improved the way in which I use git.