Results for “collection”
Small, practical examples. Search by task or narrow things down below.
Find an element’s position among siblings
jQuery: index without arguments reports a zero-based sibling position.
jQuery✓ Tested
Find an item’s index
Find an item’s index using a complete Go program with explicit sample inputs.
Go✓ Tested
Find members absent from another set
JavaScript: Negate a membership test to calculate the set difference.
JavaScript✓ Tested
Find members absent from another set
TypeScript: Negate a membership test to calculate the set difference.
TypeScript✓ Tested
Find set members missing from another set
Java: Use removeAll on a copy to calculate a set difference.
Java✓ Tested
Find shared members of two sets
JavaScript: Filter one set through the other set’s membership test.
JavaScript✓ Tested
Find shared members of two sets
TypeScript: Filter one set through the other set’s membership test.
TypeScript✓ Tested
Find shared set members
Java: Copy a set before retainAll when the original must remain unchanged.
Java✓ Tested
Group records into map entries
JavaScript: Initialize an array for a missing Map key before appending its values.
JavaScript✓ Tested
Group records into map entries
TypeScript: Initialize an array for a missing Map key before appending its values.
TypeScript✓ Tested
Initialize a map entry only when absent
Java: Use computeIfAbsent when creating a collection for a new key.
Java✓ Tested
Iterate over bounded chunks
Iterate over bounded chunks using a complete Go program with explicit sample inputs.
Go✓ Tested