Results for “Types & reliable control flow”
Small, practical examples. Search by task or narrow things down below.
Read named regex capture groups
TypeScript: Named groups make a fixed input format easier to inspect than numeric group positions.
TypeScript✓ Tested
Read one character from ASCII text
TypeScript: Use a valid zero-based index to read the first character.
TypeScript✓ Tested
Read the beginning of a text value
TypeScript: Extract or display the first three ASCII characters from a known nonempty string.
TypeScript✓ Tested
Read the final array item with a negative index
TypeScript: at supports negative positions counted from the end.
TypeScript✓ Tested
Read the first collection element
TypeScript: Access index zero only after establishing that the collection is nonempty.
TypeScript✓ Tested
Recover from an expected promise rejection
TypeScript: Return a fallback from catch so later handlers receive an ordinary resolved value.
TypeScript✓ Tested
Remove a hidden element’s layout space
CSS: Display none removes a box from layout as well as hiding its contents.
CSS✓ Tested
Remove a Map entry and detect whether it existed
TypeScript: Map.delete returns true only when an entry was present.
TypeScript✓ Tested
Remove one handler without removing others
jQuery: Pass the original function reference to off.
jQuery✓ Tested
Remove related events by namespace
jQuery: Namespaced events let a feature clean up its own handlers.
jQuery✓ Tested
Reorder captured text in a replacement
TypeScript: Use numbered replacement groups to rearrange a known two-part name.
TypeScript✓ Tested
Repeat a fixed number of times
TypeScript: Use a counted loop to print three numbered steps.
TypeScript✓ Tested