Results for “Functions & types”
Small, practical examples. Search by task or narrow things down below.
Replace an array segment in place
TypeScript: splice returns removed items and inserts replacements at the chosen position.
TypeScript✓ Tested
Replace one collection element
TypeScript: Update an existing element at a known valid index.
TypeScript✓ Tested
Require two conditions to be true
TypeScript: Combine a lower and an upper bound to check whether a value is in range.
TypeScript✓ Tested
Resolve a relative URL against a base
TypeScript: A trailing slash makes the final base path component a directory.
TypeScript✓ Tested
Restrict a function parameter to known choices
PowerShell: ValidateSet rejects unsupported values before the function body executes.
PowerShell✓ Tested
Return a collection as one pipeline object
PowerShell: The unary comma prevents the returned array from being enumerated at this boundary.
PowerShell✓ Tested
Return multiple named values from a method
C#: Named value tuples give lightweight field names without a separate class.
C#✓ Tested
Reverse a copy while preserving the original
TypeScript: Copy before reverse because reverse mutates the array it receives.
TypeScript✓ Tested
Run cleanup after a caught exception
PowerShell: Use finally for cleanup that must occur after either success or failure.
PowerShell✓ Tested
Run cleanup after a promise settles
TypeScript: finally runs after success or failure and normally preserves the original outcome.
TypeScript✓ Tested
Run cleanup around a custom context
Python: Use try/finally inside a contextmanager so cleanup runs even on failure.
Python✓ Tested
Run dependent async steps in order
TypeScript: Await one result before using it as the input of the next calculation.
TypeScript✓ Tested