[operation] examine first element [C++] front [Java] peekFirst [Perl] $array[0] [PHP] reset [Python] [0] [Ruby] first [JavaScript] [0] [Ada] 
First_Element
A p p e n d
P r e p e n d
D e l e t e _ L a s t
D e l e t e _ F i r s t
L a s t _ E l e m e n t
F i r s t _ E l e m e n t