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- Head
- First element of an array or a list.
- Usage
- Head(array)
- Arguments
- array (ARRAY(T) or LIST(...)). T is any type. If the argument is Undef, returns Undef
- Returned Object
- If array has type ARRAY(T), the function returns an element of type T. If array has type LIST(T1,...), the function returns an element of type T1. If the argument is Undef, returns Undef
- Description
- Returns the first element of an array or a list. This is equivalent to the expression array@1.
- See Also
-
Array,
List,
Pos,
At,
Tail.
Examples
AML>Head([10,11,12,13,14,15])
<INT> 10
AML> Head([[1,2],[3,4,5],Undef,[7],[8,9,10]])
<ARRAY(INT)>[1,2]
AML> Head(List([3,4,5],"alpha",5.9))
<ARRAY(INT)>[3,4,5]
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