Results for “fold”
Small, practical examples. Search by task or narrow things down below.
Use an associated constructor
Use an associated constructor in a complete Rust program using the standard library.
Rust✓ Tested
Use if to produce a value
Use if to produce a value in a complete Rust program using the standard library.
Rust✓ Tested
Validate the number of positional arguments
Bash Scripts: Use the argument count to enforce a simple command-line contract.
Bash Scripts✓ Tested
Validate UTF-8 bytes
Validate UTF-8 bytes using a complete Go program with explicit sample inputs.
Go✓ Tested
Verify a file against a checksum manifest
Linux Commands: Use sha256sum -c with a manifest obtained from a trusted source.
Linux Commands✓ Tested
Visit associative-array keys in a stable order
Bash Scripts: Associative arrays have no defined iteration order, so sort their keys explicitly.
Bash Scripts✓ Tested
Wait for a background job before reading its output
Bash Scripts: Save the job PID and wait explicitly before consuming files it produces.
Bash Scripts✓ Tested
Wait for an initialization job
Start a service only after its dependency completes successfully.
Compose✓ Tested
Wait for concurrent workers
Wait for concurrent workers using a complete Go program with explicit sample inputs.
Go✓ Tested
Wrap a value in a distinct type
Wrap a value in a distinct type in a complete Rust program using the standard library.
Rust✓ Tested
Wrap an error with context
Wrap an error with context using a complete Go program with explicit sample inputs.
Go✓ Tested
Write a generic slice helper
Write a generic slice helper using a complete Go program with explicit sample inputs.
Go✓ Tested