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Small, practical examples. Search by task or narrow things down below.

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Arduino / CSerial communication

Print a message to the Serial Monitor

Send a line once when the sketch starts.

Serial✓ Tested
Arduino / CGetting Started

Print a single character

Arduino / C: Print a single character on an Uno with the Serial Monitor set to 9600 baud.

Arduino / C✓ Tested
Arduino / CSerial communication

Print integers in different bases

Inspect a byte in decimal, hexadecimal, and binary.

Serial✓ Tested
Arduino / CGetting Started

Print once from setup

Arduino / C: Print once from setup on an Uno with the Serial Monitor set to 9600 baud.

Arduino / C✓ Tested
Bash ScriptsText parsing & arithmetic

Print text containing percent characters literally

Bash Scripts: Never use untrusted text as the printf format string.

Bash Scripts✓ Tested
PythonStructured data & serialization

Produce compact deterministic JSON

Python: Sort dictionary keys and remove separator whitespace for a reproducible representation.

Python✓ Tested
AngularGetting Started

Project content into a reusable component

Project content into a reusable component with a standalone Angular component and explicit browser behavior.

Angular✓ Tested
AngularComponents & communication

Project content into named slots

Project content into named slots with a standalone Angular component and explicit browser behavior.

Angular✓ Tested
GoConcurrency & cancellation

Protect a shared counter

Protect a shared counter using a complete Go program with explicit sample inputs.

Go✓ Tested
RustThreads & shared ownership

Protect shared mutable state with a mutex

Protect shared mutable state with a mutex in a complete Rust program using the standard library.

Rust✓ Tested
RustErrors & optional values

Provide a default for a missing value

Provide a default for a missing value in a complete Rust program using the standard library.

Rust✓ Tested
AngularAccessibility & reusable patterns

Provide alternative text for an informative image

Provide alternative text for an informative image with a standalone Angular component and explicit browser behavior.

Angular✓ Tested