From b7f997d3686cdd60a31c9a37a4c85a2875d303b3 Mon Sep 17 00:00:00 2001
From: bculkin2442 <bjculkin@mix.wvu.edu>
Date: Tue, 11 Apr 2017 16:29:24 -0400
Subject: More splitters

---
 .../src/main/java/bjc/utils/funcdata/IList.java     | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

(limited to 'BJC-Utils2/src/main/java/bjc/utils/funcdata/IList.java')

diff --git a/BJC-Utils2/src/main/java/bjc/utils/funcdata/IList.java b/BJC-Utils2/src/main/java/bjc/utils/funcdata/IList.java
index de48d6f..28c09d0 100644
--- a/BJC-Utils2/src/main/java/bjc/utils/funcdata/IList.java
+++ b/BJC-Utils2/src/main/java/bjc/utils/funcdata/IList.java
@@ -10,6 +10,7 @@ import java.util.function.Predicate;
 import java.util.stream.Collector;
 
 import bjc.utils.data.IPair;
+import bjc.utils.functypes.ID;
 
 /**
  * A wrapper over another list that provides functional operations over it.
@@ -315,6 +316,26 @@ public interface IList<ContainedType> extends Iterable<ContainedType> {
 			BiFunction<ContainedType, StateType, StateType> accumulator,
 			Function<StateType, ReducedType> transformer);
 
+	/**
+	 * Reduce this list to a single value, using a accumulative approach.
+	 *
+	 * @param <StateType>
+	 *                The in-between type of the values.
+	 *
+	 * @param initial
+	 *                The initial value of the accumulative state.
+	 * 
+	 * @param accumulator
+	 *                The function to use to combine a list element with the
+	 *                accumulative state.
+	 * 
+	 * @return A single value condensed from this list.
+	 */
+	default <StateType> StateType reduceAux(StateType initial,
+			BiFunction<ContainedType, StateType, StateType> accumulator) {
+		return reduceAux(initial, accumulator, ID.id());
+	}
+
 	/**
 	 * Remove all elements that match a given predicate
 	 *
-- 
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