Returns the concatentation of x with its own duplicate in reverse order. If input is an iterable, it MUST be finite!
x
In the general case, this is similar to concat(x, reverse(x)), though keeps input type intact.
concat(x, reverse(x))
palindrome("hello"); // "helloolleh" palindrome([1, 2, 3]); // [1, 2, 3, 3, 2, 1] palindrome(range(3)); // IterableIterator<number>
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Returns the concatentation of
xwith its own duplicate in reverse order. If input is an iterable, it MUST be finite!In the general case, this is similar to
concat(x, reverse(x)), though keeps input type intact.palindrome("hello"); // "helloolleh" palindrome([1, 2, 3]); // [1, 2, 3, 3, 2, 1] palindrome(range(3)); // IterableIterator<number>