{{alias}}( collection, initial, reducer[, thisArg] ) Applies a function against an accumulator and each element in a collection and returns the accumulated result, iterating from right to left. When invoked, the reduction function is provided four arguments: - `accumulator`: accumulated value - `value`: collection value - `index`: collection index - `collection`: the input collection If provided an empty collection, the function returns the initial value. Parameters ---------- collection: Array|TypedArray|Object Input collection. If provided an object, the object must be array-like (excluding strings and functions). initial: any Accumulator value used in the first invocation of the reduction function. reducer: Function Function to invoke for each element in the input collection. thisArg: any (optional) Execution context. Returns ------- out: any Accumulated result. Examples -------- > function sum( acc, v ) { ... console.log( '%s: %d', acc, v ); ... return acc + v; ... }; > var arr = [ 1.0, 2.0, 3.0 ]; > var out = {{alias}}( arr, 0, sum ); 2: 3.0 1: 2.0 0: 1.0 > out 6.0 See Also --------