std/array/secondToLast
Returns the second to last element or undefined when there are less than two elements in the given array.
Type signature
<T>(xs: T[]) => T | undefinedExamples
secondToLast([1, 2, 3, 4, 5]);
// ⇒ 4
secondToLast([1]);
// ⇒ undefined
secondToLast([]);
// ⇒ undefined
Questions
- How to get the second to last element of an array?