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

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Linux CommandsGetting Started

Create an empty practice file

Linux Commands: Create an empty practice file using GNU/Linux commands in an empty practice directory.

Linux Commands✓ Tested
SQLiteSchema design & transactions

Create an index for an equality filter

SQLite: A nonunique index can support lookups on a frequently filtered column.

SQLite✓ Tested
SQLiteSchema design & transactions

Create an index matching filter and ordering columns

SQLite: Place the equality-filter column before the ordering column in this composite index.

SQLite✓ Tested
GoFiles & paths

Create and clean up a temporary file

Create and clean up a temporary file using a complete Go program with explicit sample inputs.

Go✓ Tested
Linux CommandsFiles & permissions

Create private files with a restrictive umask

Linux Commands: Apply umask in a subshell so the surrounding shell is unaffected.

Linux Commands✓ Tested
Bash ScriptsGetting Started

Declare a fixed configuration value

Bash Scripts: Declare a fixed configuration value with a small standalone Bash program.

Bash Scripts✓ Tested
GoGetting Started

Declare a fixed-size array

Declare a fixed-size array using a complete Go program with explicit sample inputs.

Go✓ Tested
Docker / ComposeCompose applications

Declare a named volume in Compose

Mount persistent storage at a service path.

Compose✓ Tested
RustGetting Started

Declare a typed constant

Declare a typed constant in a complete Rust program using the standard library.

Rust✓ Tested
GoGetting Started

Declare and update a variable

Declare and update a variable using a complete Go program with explicit sample inputs.

Go✓ Tested
RustParsing & byte data

Decode bytes as validated UTF-8

Decode bytes as validated UTF-8 in a complete Rust program using the standard library.

Rust✓ Tested
GoJSON & encoding

Decode JSON into a typed struct

Decode JSON into a typed struct using a complete Go program with explicit sample inputs.

Go✓ Tested