Returns the first member of an array, that is $array(1)
.
array:head
( $array
as array(*)
item()*
The function returns first member of $array
, that is the value of $array(1)
.
The expression array:head([5, 6, 7, 8])
returns 5
.
The expression array:head([["a", "b"], ["c", "d"]])
returns ["a", "b"]
.
The expression array:head([("a", "b"), ("c", "d")])
returns "a", "b"
.
A dynamic error occurs if $array
is empty.