Examples

Examples are organized by task. Each linked page supplies a complete program, execution instructions and backend requirements. File, server and database prerequisites are stated explicitly.

Task	Example and environment
First program	Hello Ku; interpreter or native C
Chinese and emoji	Strings; interpreter or listed native methods
JSON round trips and errors	JSON; interpreter or synchronous native C
Write and read a file	Filesystem; creates a file beside the source
Dates and waiting	Time; wall-clock versus monotonic time
HTTP server and requests	HTTP; start the local server first
Tasks and await	Async calls; one-use handles and explicit Results
Multi-file project	Packages and modules; local imports
Database queries	PG / Redis / MySQL; native C and real services
Binary data and TCP	bytes / net; native C

The repository’s examples directory contains larger examples. Long-running services, load generators and database programs have their own prerequisites; do not run the entire directory as an unconditional batch.