tulkdan.dev
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Kotlin/Functions.org
+48
Kotlin/Functions.org
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* Functions
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To make your code more concise, you can use single-expression functions.
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For example, the =sum()= function can be shortened
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#+begin_src kotlin
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fun sum(x: Int, y: Int): Int {
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return x + y
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}
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println(sum(1,2))
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#+end_src
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#+RESULTS:
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: 3
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#+begin_src kotlin
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fun sum2(x: Int, y: Int) = x + y
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println(sum2(1,2))
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#+end_src
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#+RESULTS:
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: 3
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** Lambda expressions
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You can even write lambda expressions in kotlin
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#+begin_src kotlin
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fun uppercaseString(string: String): String {
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return string.uppercase()
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}
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println(uppercaseString("hello"))
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#+end_src
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#+RESULTS:
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: HELLO
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Can also be written to:
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#+begin_src kotlin
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println({ string: String -> string.uppercase() }("hello"))
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#+end_src
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#+RESULTS:
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: HELLO