kotlin-stdlib

Kotlin Standard Library

The Kotlin Standard Library provides living essentials for everyday work with Kotlin. These include:

Higher-order functions implementing idiomatic patterns (let, apply, use, synchronized, etc).
Extension functions providing querying operations for collections (eager) and sequences (lazy).
Various utilities for working with strings and char sequences.
Extensions for JDK classes making it convenient to work with files, IO, and threading.

Packages

JVM

Core functions and types, available on all supported platforms.

kotlin.annotation

JVM

Library support for the Kotlin annotation facility.

kotlin.collections

JVM

Collection types, such as Iterable, Collection, List, Set, Map and related top-level and extension functions.

kotlin.comparisons

JVM

Helper functions for creating Comparator instances.

kotlin.concurrent

JVM

Utility functions for concurrent programming.

JVM

IO API for working with files and streams.

JVM

Functions and other APIs specific to the JavaScript platform.

JVM

Functions and annotations specific to the Java platform.

kotlin.native.concurrent

JVM

kotlin.properties

JVM

Standard implementations of delegates for /docs/reference/delegated-properties.html and helper functions for implementing custom delegates.

JVM

/docs/reference/ranges.html, Progressions and related top-level and extension functions.

JVM

Runtime API for /docs/reference/reflection.html

kotlin.sequences

JVM

Sequence type that represents lazily evaluated collections. Top-level functions for instantiating sequences and extension functions for sequences.

JVM

System-related utility functions.

JVM

Functions for working with text and regular expressions.

Index

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