Reference

Asserts that the sequence contains zero or one items; raises a dynamic error if it contains more than one item.

Returns the absolute value of a numeric argument, removing any negative sign while preserving the numeric type.

Calls a function item with arguments supplied as an array, enabling dynamic dispatch with a variable argument list.

Returns a new array with an additional member appended at the end.

Returns the member of an array at a specified 1-based position.

Returns the first member of an array; raises an error if the array is empty.

Concatenates a sequence of arrays into a single array by combining all their members.

Returns a new array with the member at a given position replaced by a new value.

Returns a new array with the members in reverse order.

Returns the number of members in an array.