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RustGetting Started

Construct a named-field struct

Construct a named-field struct in a complete Rust program using the standard library.

Rust✓ Tested
RustFunctions & data types

Construct a struct with default values

Construct a struct with default values in a complete Rust program using the standard library.

Rust✓ Tested
RustNumbers & durations

Construct an instant relative to the Unix epoch

Construct an instant relative to the Unix epoch in a complete Rust program using the standard library.

Rust✓ Tested
Bash ScriptsArguments & decisions

Consume positional arguments one at a time

Bash Scripts: Check the argument count before accessing the first parameter with nounset enabled.

Bash Scripts✓ Tested
ReactGetting Started

Control a checkbox

Control a checkbox with a small React component and explicit browser behavior.

React✓ Tested
ReactForms & validation

Control a multiline text field

Control a multiline text field with a small React component and explicit browser behavior.

React✓ Tested
ReactForms & validation

Control a radio-button group

Control a radio-button group with a small React component and explicit browser behavior.

React✓ Tested
ReactGetting Started

Control a select element

Control a select element with a small React component and explicit browser behavior.

React✓ Tested
ReactGetting Started

Control a text input

Control a text input with a small React component and explicit browser behavior.

React✓ Tested
Bash ScriptsVariables & text

Convert a string to lowercase

Normalize a text value using Bash expansion.

lowercase✓ Tested
Linux CommandsDates & process utilities

Convert a Unix timestamp to UTC

Linux Commands: Use the @ syntax with GNU date for seconds since the Unix epoch.

Linux Commands✓ Tested
Bash ScriptsParameter expansion

Convert a variable to uppercase

Bash Scripts: Double caret transforms matching lowercase characters in Bash 4 or later.

Bash Scripts✓ Tested