Standard library

The standard library ships with Ku. Import modules through std; no separate package installation is required. Each reference describes interfaces, return values, errors and examples.

Data and collections

Module	Purpose
string	Unicode strings, search, slicing and replacement
array	Array access, composition and mapping
object	String-keyed objects, fields and defaults
json	JSON encoding, decoding and dynamic values

Files, time and networking

Module	Purpose
fs	UTF-8 file I/O and directory listings
time	Timestamps, dates, formatting, durations and waiting
config	.env and YAML configuration
http	HTTP clients, routes, requests and responses
bytes	Binary buffers
net	TCP and TLS clients

Databases and developer tools

Module	Purpose
pg / redis / mysql	Database clients, pools and detached results
lexer / parser	Lexer and parser debugging summaries

Imports

import json from "std.json"
import { http, time } from "std"

Examples import their dependencies explicitly. Databases, bytes and net currently require native C. See each module and the support matrix for backend availability.

T! is a Result that may contain an Error. Propagate it with ? or handle it with try/catch. An & parameter borrows read-only without consuming or implicitly copying its input. Allocating a new output string or array is separate from copying an input.

Browse the task-oriented examples or learn to write your own library in packages and modules. std.task is an internal observation interface; applications use async fn and await, described in the concurrency guide.