Results for “Ownership & optional values”
Small, practical examples. Search by task or narrow things down below.
Encode and decode Base64 bytes
Java: Convert through UTF-8 explicitly before and after Base64 encoding.
Java✓ Tested
Extract the low and high byte of a value
Arduino / C: lowByte and highByte expose the two bytes of a 16-bit value.
Arduino / C✓ Tested
Grow an allocation without losing it on failure
C: Assign realloc to a temporary pointer so the original allocation remains available if growth fails.
C✓ Tested
Initialize a byte buffer to zero
C: memset initializes each byte to the chosen unsigned-char value.
C✓ Tested
Initialize shared data once
Initialize shared data once in a complete Rust program using the standard library.
Rust✓ Tested
Insert a map value only when a key is absent
C++: try_emplace preserves the old value when insertion does not take place.
C++✓ Tested
Inspect components of a URI
Java: Use URI parsing instead of splitting a URL at punctuation manually.
Java✓ Tested
Join a worker thread and read its result
Join a worker thread and read its result in a complete Rust program using the standard library.
Rust✓ Tested
Measure UTF-8 bytes separately from characters
Java: Encode a Java string before measuring its serialized byte length.
Java✓ Tested
Move owned data into a worker
Move owned data into a worker in a complete Rust program using the standard library.
Rust✓ Tested
Parse a UUID and inspect its version
Java: Use UUID.fromString for a standard UUID value.
Java✓ Tested
Process a first-in first-out queue
C++: Queue exposes its front item separately from the operation that removes it.
C++✓ Tested