[operation] remove first element [common name(s)] pop [C++] pop_front [Java] pollFirst [Perl] shift [PHP] array_shift [Python] popleft [Ruby] shift [JavaScript] shift [Ada] 
Delete_First
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