Results for “collection”
Small, practical examples. Search by task or narrow things down below.
Find values common to two collections
C#: Intersect returns distinct values shared by the inputs.
C#✓ Tested
Find values missing from another collection
Python: Use a set difference to identify requested IDs absent from the available IDs.
Python✓ Tested
Find values missing from another collection
C#: Except removes duplicates as it calculates the set difference.
C#✓ Tested
Find values shared by two collections
Python: Use set intersection and sort the result for deterministic display.
Python✓ Tested
Flatten nested collections
Java: Use flatMap to concatenate nested Java lists into one stream.
Java✓ Tested
Flatten nested collections
Flatten nested collections in a complete Rust program using the standard library.
Rust✓ Tested
Flatten nested collections with SelectMany
C#: Concatenate the items from several sequences into one sequence.
C#✓ Tested
Generate combinations across two collections
Python: Use product for a Cartesian product; this differs from selecting combinations within one collection.
Python✓ Tested
Memoize a derived collection
Memoize a derived collection with a small React component and explicit browser behavior.
React✓ Tested
Move a collection out and leave an empty default
Move a collection out and leave an empty default in a complete Rust program using the standard library.
Rust✓ Tested
Page through a collection
Page through a collection with a standalone Angular component and explicit browser behavior.
Angular✓ Tested
Pair corresponding collection elements
C#: Zip stops at the shorter sequence, so validate lengths separately if mismatches are an error.
C#✓ Tested