One peculiarity of Ruby that trips up a lot of programmers migrating from other languages is the fact that while it has true and false types, they don't share a …
Tag: boolean
Episode #411: Stay Positive 2
Another little episode about thinking positive.
Episode #410: Stay Positive
A little episode about thinking positive.
Episode #295: Predicate Return Value Part 2
In the second of two episodes about predicate return values, we look at some of the subtle ways that non-boolean predicate return values can catch programmers by surprise.
Episode #294: Predicate Return Value Part 1
Predicates return booleans, right? Not always, as it turns out. Part 1 of 2.
Episode #268: Complex Predicate
Today we'll refactor some real-world business logic for clarity and ease of debugging.
Episode #125: And/Or
Ruby has both symbolic and English forms of the logical "and" and "or" operators. Which one to choose may seem like a matter of taste, but that assumption can get …
Episode #094: Bang Bang
Have you ever found yourself looking for a '#to_bool' method in Ruby? This episode explores why boolean conversion isn't needed as often as you might think; as well as how …
Episode #093: Boolean
A common question on Ruby forums and mailing lists is: "why is there no Boolean data type?". This episode attempts to answer that question.
Episode #043: Exclusive Or
This episode looks at Ruby's logical XOR operator, and how it can be useful in checking that a method was called with the correct optional arguments.