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1* Functions
2
3To make your code more concise, you can use single-expression functions.
4For example, the =sum()= function can be shortened
5
6#+begin_src kotlin
7 fun sum(x: Int, y: Int): Int {
8 return x + y
9 }
10
11 println(sum(1,2))
12#+end_src
13
14#+RESULTS:
15: 3
16
17#+begin_src kotlin
18 fun sum2(x: Int, y: Int) = x + y
19
20 println(sum2(1,2))
21#+end_src
22
23#+RESULTS:
24: 3
25
26** Lambda expressions
27
28You can even write lambda expressions in kotlin
29
30#+begin_src kotlin
31 fun uppercaseString(string: String): String {
32 return string.uppercase()
33 }
34
35 println(uppercaseString("hello"))
36#+end_src
37
38#+RESULTS:
39: HELLO
40
41Can also be written to:
42
43#+begin_src kotlin
44 println({ string: String -> string.uppercase() }("hello"))
45#+end_src
46
47#+RESULTS:
48: HELLO