FoldPair

FoldPair[f, y0, list] gives the last element of FoldPairList[f, y0, list].

Examples

Generate with state:

FoldPair[{#1 + #2, #1 + #2} &, 0, {1, 2, 3, 4}]
(* 10 *)

Running total with pair:

FoldPair[{#1 + #2, #1 + #2} &, 0, Range[5]]

Please visit the official Wolfram Language Reference for more details.