Checking whether string ends with given string in clojure

Question

I have created a function to check whether or not my first string ends with a second string.

In Java we have ready made method to check this, but in Clojure I failed to find such a method so I written custom function as follows:

(defn endWithFun [arg1 arg2] 
    (= (subs arg1 (- (count arg1) (count arg2)) (count arg1)) arg2))

Outputs:

> (endWithFun "swapnil" "nil")
true
> (endWithFun "swapnil" "nilu")
false

This is working as expected.

I want to know, is there a similar alternative? Also in my case, I compare case sensitively. I also want to ignore case sensitivity.

Answer 1

You can access the native Java endsWith directly in Clojure:

(.endsWith "swapnil" "nil")

See http://clojure.org/java_interop for some more details.

You can then naturally compose this to get case insensitivity:

(.endsWith (clojure.string/lower-case "sWapNIL") "nil")

Answer 2

Clojure 1.8 introduced an ends-with? function in clojure.string, so now there is a native function:

> (ends-with? "swapnil" "nil")
true
> (ends-with? "swapnil" "nilu")
false

Again, just apply lower-case if you want case insensitivity.