170614(수) - Kotlin docs (Packages)

Kotlin docs

Packages

Packages

package foo.bar

fun baz() {}

class Goo {}

// ...

Default Imports

- every kotlin file

• kotlin.*
• kotlin.annotation.*
• kotlin.collections.*
• kotlin.comparisons.* (since 1.1)
• kotlin.io.*
• kotlin.ranges.*
• kotlin.sequences.*
• kotlin.text.*

- Additional packages are depending on target platform.

- JVM

java.lang.*

kotlin.jvm.*

- JS

kotlin.js.*

Imports

import foo.Bar            // Bar is now accessible without qualification

import foo.*               // everything in 'foo' accessible

import foo.Bar

import bar.Bar as bBar  // bBar stand for 'bar.Bar'

- import는 importing class 말고도 여러가지 선언 가능

- top-level functions and properties

- functions and properties declared in object declarations

- enum constants

- Java의 import static은 사용 불가능

Visibility of Top-level Declarations

top-level declaration이 private이면 선언된 파일도private이다.