Musings

• inch on recommendations for documentation. It also has CI.
• deep_freeze freezes Ruby objects - good to look at the code on how it does that.
• Almost every gem has config commands and parsers for those config commands. Really cool to think about.

A Review Of Immutability In Ruby

Reference

• When two or more objects use the same piece of mutable data, they all have the ability to break each other in ways that can be hard to debug.
• Standard lib’s freeze: prevents further modifications to obj. A RuntimeError will be raised if modification is attempted.
• This will work on all objects except BasicObject.
• Reassigning a constant variable will generate a warning, but mutating a constant value will not. You have to actually freeze the constant. Problem is, it’s shallow, so the existing elements can actually still change.
• String literals are also immutable, just like numbers and symbols.
• Recursively freezing an object property?
• values gem