From 5f64dfdebff2a18b2d99d809951fee39eceb461e Mon Sep 17 00:00:00 2001
From: b97tsk <b97tsk@gmail.com>
Date: Tue, 23 Jan 2024 20:20:17 +0800
Subject: [PATCH] Rename function Combine to Reduce

---
 difference_test.go      | 6 +++---
 intersection_test.go    | 6 +++---
 combine.go => reduce.go | 4 ++--
 symdiff_test.go         | 6 +++---
 union_test.go           | 6 +++---
 5 files changed, 14 insertions(+), 14 deletions(-)
 rename combine.go => reduce.go (83%)

diff --git a/difference_test.go b/difference_test.go
index d4383c5..69ade84 100644
--- a/difference_test.go
+++ b/difference_test.go
@@ -61,8 +61,8 @@ func TestDifference(t *testing.T) {
 			Set[E]{{1, 5}, {9, 13}, {17, 21}, {25, 29}}.Difference(Set[E]{{5, 25}}),
 			Set[E]{{1, 5}, {25, 29}},
 		},
-		{Combine(Difference[E]), Set[E]{}},
-		{Combine(Difference, Set[E]{}), Set[E]{}},
+		{Reduce(Difference[E]), Set[E]{}},
+		{Reduce(Difference, Set[E]{}), Set[E]{}},
 		{
 			func() Set[E] {
 				var x2, x3, x5 Set[E]
@@ -79,7 +79,7 @@ func TestDifference(t *testing.T) {
 					x5 = Add(x5, One(E(i)))
 				}
 
-				return Combine(Difference, x2, x3, x5)
+				return Reduce(Difference, x2, x3, x5)
 			}(),
 			Set[E]{{2, 3}, {4, 5}, {8, 9}, {14, 15}, {16, 17}, {22, 23}, {26, 27}, {28, 29}},
 		},
diff --git a/intersection_test.go b/intersection_test.go
index 3d33fb8..0472f4b 100644
--- a/intersection_test.go
+++ b/intersection_test.go
@@ -25,8 +25,8 @@ func TestIntersection(t *testing.T) {
 			Set[E]{{3, 11}, {13, 21}}.Intersection(Set[E]{{1, 5}, {9, 15}, {19, 23}}),
 			Set[E]{{3, 5}, {9, 11}, {13, 15}, {19, 21}},
 		},
-		{Combine(Intersection[E]), Set[E]{}},
-		{Combine(Intersection, Set[E]{}), Set[E]{}},
+		{Reduce(Intersection[E]), Set[E]{}},
+		{Reduce(Intersection, Set[E]{}), Set[E]{}},
 		{
 			func() Set[E] {
 				var x2, x3, x5 Set[E]
@@ -43,7 +43,7 @@ func TestIntersection(t *testing.T) {
 					x5 = Add(x5, One(E(i)))
 				}
 
-				return Combine(Intersection, x2, x3, x5)
+				return Reduce(Intersection, x2, x3, x5)
 			}(),
 			Set[E]{{30, 31}, {60, 61}, {90, 91}},
 		},
diff --git a/combine.go b/reduce.go
similarity index 83%
rename from combine.go
rename to reduce.go
index 1f10bcc..53a04b2 100644
--- a/combine.go
+++ b/reduce.go
@@ -1,9 +1,9 @@
 package intervals
 
-// Combine applies set operation op over sets, returning the end result.
+// Reduce applies set operation op over sets, returning the end result.
 // op can be any of [Difference], [Intersection], [SymmetricDifference] and
 // [Union].
-func Combine[E Elem[E]](
+func Reduce[E Elem[E]](
 	op func(z, x, y Set[E]) Set[E],
 	sets ...Set[E],
 ) Set[E] {
diff --git a/symdiff_test.go b/symdiff_test.go
index db961d0..ae77f02 100644
--- a/symdiff_test.go
+++ b/symdiff_test.go
@@ -61,8 +61,8 @@ func TestSymmetricDifference(t *testing.T) {
 			Set[E]{{1, 5}, {9, 13}, {17, 21}, {25, 29}}.SymmetricDifference(Set[E]{{5, 25}}),
 			Set[E]{{1, 9}, {13, 17}, {21, 29}},
 		},
-		{Combine(SymmetricDifference[E]), Set[E]{}},
-		{Combine(SymmetricDifference, Set[E]{}), Set[E]{}},
+		{Reduce(SymmetricDifference[E]), Set[E]{}},
+		{Reduce(SymmetricDifference, Set[E]{}), Set[E]{}},
 		{
 			func() Set[E] {
 				var x2, x3, x5 Set[E]
@@ -79,7 +79,7 @@ func TestSymmetricDifference(t *testing.T) {
 					x5 = Add(x5, One(E(i)))
 				}
 
-				return Combine(SymmetricDifference, x2, x3, x5)
+				return Reduce(SymmetricDifference, x2, x3, x5)
 			}(),
 			Set[E]{{2, 6}, {8, 10}, {14, 15}, {16, 17}, {21, 23}, {25, 29}, {30, 31}},
 		},
diff --git a/union_test.go b/union_test.go
index cc3aa03..3f90304 100644
--- a/union_test.go
+++ b/union_test.go
@@ -33,8 +33,8 @@ func TestUnion(t *testing.T) {
 			Set[E]{{3, 11}, {13, 21}}.Union(Set[E]{{1, 5}, {9, 15}, {19, 23}}),
 			Set[E]{{1, 23}},
 		},
-		{Combine(Union[E]), Set[E]{}},
-		{Combine(Union, Set[E]{}), Set[E]{}},
+		{Reduce(Union[E]), Set[E]{}},
+		{Reduce(Union, Set[E]{}), Set[E]{}},
 		{
 			func() Set[E] {
 				var x2, x3, x5 Set[E]
@@ -51,7 +51,7 @@ func TestUnion(t *testing.T) {
 					x5 = Add(x5, One(E(i)))
 				}
 
-				return Combine(Union, x2, x3, x5)
+				return Reduce(Union, x2, x3, x5)
 			}(),
 			Set[E]{{2, 7}, {8, 11}, {12, 13}, {14, 17}, {18, 19}, {20, 23}, {24, 29}, {30, 31}},
 		},