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

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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
Docker / ComposeBuild images

Provide a default environment value

Set a runtime default that can be overridden at startup.

Dockerfile✓ 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
Docker / ComposeCompose applications

Put an optional service behind a profile

Keep a utility service separate from a normal Compose startup.

Compose✓ Tested
RustMaps & sets

Query an ordered map’s key range

Query an ordered map’s key range in a complete Rust program using the standard library.

Rust✓ Tested
GoConcurrency & cancellation

Queue values in a buffered channel

Queue values in a buffered channel using a complete Go program with explicit sample inputs.

Go✓ Tested
GoConcurrency & cancellation

Range over a closed channel

Range over a closed channel using a complete Go program with explicit sample inputs.

Go✓ Tested
SQLiteWindow analytics

Rank tied scores with competition gaps

SQLite: RANK leaves a gap after tied rows, unlike DENSE_RANK.

SQLite✓ Tested
SQLiteWindow analytics

Rank tied scores without gaps

SQLite: DENSE_RANK assigns equal ranks to ties and increments by one for the next distinct score.

SQLite✓ Tested
GoJSON & encoding

Read a big-endian integer from bytes

Read a big-endian integer from bytes using a complete Go program with explicit sample inputs.

Go✓ Tested
Linux CommandsStreams & byte tools

Read a byte prefix

Linux Commands: Use GNU head -c for a fixed number of bytes, independent of line boundaries.

Linux Commands✓ Tested