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Results for “Arduino / C”

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

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C#Collections

Look up a dictionary value

Use TryGetValue for a C# dictionary lookup with a fallback.

C#✓ Tested
Bash ScriptsFunctions & arguments

Look up values in an associative array

Use named keys for a small in-memory configuration table.

dictionary✓ Tested
RustGetting Started

Loop over an inclusive range

Loop over an inclusive range in a complete Rust program using the standard library.

Rust✓ Tested
Docker / ComposeGetting Started

Make a Compose service’s filesystem read-only

Docker / Compose: Make a Compose service’s filesystem read-only in a small Compose file.

Docker / Compose✓ Tested
SQLConstraints & defaults

Make a pair of columns unique together

SQL: A composite primary key permits repeated individual values while forbidding a duplicate combination.

SQL✓ Tested
SQL ServerConstraints & defaults

Make a pair of columns unique together

SQL Server: A composite primary key permits repeated individual values while forbidding a duplicate combination.

SQL Server✓ Tested
PostgresConstraints & defaults

Make a pair of columns unique together

Postgres: A composite primary key permits repeated individual values while forbidding a duplicate combination.

Postgres✓ Tested
SQLiteConstraints & defaults

Make a pair of columns unique together

SQLite: A composite primary key permits repeated individual values while forbidding a duplicate combination.

SQLite✓ Tested
Linux CommandsFiles & permissions

Make a script executable by its owner

Linux Commands: Add the owner execute bit without replacing all permission bits.

Linux Commands✓ Tested
Linux CommandsGetting Started

Make a second copy of a practice file

Linux Commands: Make a second copy of a practice file using GNU/Linux commands in an empty practice directory.

Linux Commands✓ Tested
CSSGetting Started

Make an inline element a block

CSS: Learn how to make an inline element a block in a complete browser example.

CSS✓ Tested
HTMLForm behavior

Make an unavailable select option unselectable

HTML: A disabled option remains visible but cannot be selected through normal keyboard navigation.

HTML✓ Tested