Lesser known Clojure: new string functions in Clojure 1.8
The latest version of Clojure (1.8) introduced a new set of functions operating on strings. Those functions are only a syntactic sugar. All of its functionality can be achieved with
Java methods, but they make our code more idiomatic and easier to read. For clarity’s sake I will list all of them with its doc strings and some examples.
Lesser known Clojure: reduce kv
In addition to commonly known
reduce function Clojure has its specialized version called
reduce-kv. This function is designed to work with associative collections (like map or vector). Here is its signature:
Lesser known Clojure: keep, keep-indexed and map-indexed functions
I could safely say that
filter are the most commonly used functions in
Clojure (and probably other functional languages). Of course
Clojure provides other useful functions that operate on collections that are not so popular and commonly known. Let’s look at some of them.
Lesser known Clojure every-pred and some-fn functions
The common thing in functional programming is combining “smaller” functions into the bigger one (higher-order functions). The examples of such functions are
some-fn. Both those functions were added to Clojure in release 1.3.