Getting Clojure

Chapter 10Sequences

There’s a pleasant mystery about Clojure that most newly arrived programmers notice sooner or later. On one hand the language has this rich variety of collection types, everything from the map to the set to the vector and the list, each one good at some operations and less so at others. And Clojure programmers use the range of collection types with reasonably wild abandon.

Now for the mystery: There is very little Oh, this is a vector but this is a map special pleading in real-world Clojure code. Certainly you can find code here and there that is concerned with specific collection types, but you can also find vast stretches of Clojure code that seem to simply ignore the differences between the collection types.

So in this ...