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1What Kotlin is
2Kotlin vs. Java: the short version
3Installing IntelliJ IDEA or Android Studio
4Your first Kotlin program
5The Kotlin REPL and scratch files
6Kotlin Multiplatform in brief
7val vs. var: immutable first
8Type inference
9Strings and templates
10Numbers and conversions
11Null safety: the ? type
12Safe calls and the Elvis operator
13Smart casts
14When expressions
15if as an expression
16when: switch, upgraded
17for loops and ranges
18while and do-while
19Functions and default arguments
20Named arguments
21Single-expression functions
22Extension functions
23Lambdas and trailing lambda syntax

1What Kotlin is
2Kotlin vs. Java: the short version
3Installing IntelliJ IDEA or Android Studio
4Your first Kotlin program
5The Kotlin REPL and scratch files
6Kotlin Multiplatform in brief
7val vs. var: immutable first
8Type inference
9Strings and templates
10Numbers and conversions
11Null safety: the ? type
12Safe calls and the Elvis operator
13Smart casts
14When expressions
15if as an expression
16when: switch, upgraded
17for loops and ranges
18while and do-while
19Functions and default arguments
20Named arguments
21Single-expression functions
22Extension functions
23Lambdas and trailing lambda syntax

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Lesson 22 of 2,699·1. Getting StartedFree lesson

Extension functions

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