Results for “Collections & styling”
Small, practical examples. Search by task or narrow things down below.
Group records into map entries
TypeScript: Initialize an array for a missing Map key before appending its values.
TypeScript✓ Tested
Iterate over bounded chunks
Iterate over bounded chunks using a complete Go program with explicit sample inputs.
Go✓ Tested
List an object’s own enumerable keys
JavaScript: Object.keys omits inherited and non-enumerable properties.
JavaScript✓ Tested
List an object’s own enumerable keys
TypeScript: Object.keys omits inherited and non-enumerable properties.
TypeScript✓ Tested
Preallocate a slice’s capacity
Preallocate a slice’s capacity using a complete Go program with explicit sample inputs.
Go✓ Tested
Prevent runtime changes to top-level properties
JavaScript: Object.freeze prevents ordinary top-level mutations; Reflect.set reports the rejected update without throwing.
JavaScript✓ Tested
Prevent runtime changes to top-level properties
TypeScript: Object.freeze prevents ordinary top-level mutations; Reflect.set reports the rejected update without throwing.
TypeScript✓ Tested
Process a FIFO queue
C#: Queue removes elements in the order they were enqueued.
C#✓ Tested
Process items by numeric priority
C#: PriorityQueue removes the item with the smallest priority value first.
C#✓ Tested
Read an object’s own enumerable values
JavaScript: Object.values provides values without their corresponding keys.
JavaScript✓ Tested
Read an object’s own enumerable values
TypeScript: Object.values provides values without their corresponding keys.
TypeScript✓ Tested
Remove a Map entry and detect whether it existed
JavaScript: Map.delete returns true only when an entry was present.
JavaScript✓ Tested