Ruby

The other day I was digging through the ruby documentation and stumbled on the uniq method. I was startled to find that you can pass in a block as a parameter. My instinct was to back away slowly, not unlike a cat looking at a bathtub full of water. After all, why on Earth would one want to filter uniqueness based on some criteria other than an exact match? Undaunted, I figured it would be fun to explore this method a bit more… find out what makes it tick.

There’s this Ruby problem I revisit from time to time. The built-in hash array has a really handy map method. To the uninitiated, the map method is used to modify all elements in an array with the function specified.