first
The first function returns the first element of an array or the first character of a string.
Syntax
typescript
first<T>(array: T[]): T | undefined;
first(string: string): string | undefined;Parameters
| Name | Type | Description |
|---|---|---|
array | T[] | string | Source array or string |
Returns
| Type | Description |
|---|---|
T | string | undefined | First element or character, or undefined if empty |
Examples
typescript
first([1, 2, 3]); // => 1
first("abc"); // => "a"
first([]); // => undefinedNotes
- Returns undefined if the array or string is empty.
- Useful for quickly accessing the first item.