From c0bdacecb32a03b1e7e86d48448dfc7f02870e9b Mon Sep 17 00:00:00 2001
From: Alexander Nozik <altavir@gmail.com>
Date: Wed, 6 Feb 2019 18:18:10 +0300
Subject: [PATCH] Moved sums out of Space

---
 .../kotlin/scientifik/kmath/operations/Algebra.kt          | 3 ---
 .../scientifik/kmath/operations/AlgebraExtensions.kt       | 7 +++++++
 2 files changed, 7 insertions(+), 3 deletions(-)
 create mode 100644 kmath-core/src/commonMain/kotlin/scientifik/kmath/operations/AlgebraExtensions.kt

diff --git a/kmath-core/src/commonMain/kotlin/scientifik/kmath/operations/Algebra.kt b/kmath-core/src/commonMain/kotlin/scientifik/kmath/operations/Algebra.kt
index 8aa3a0e05..42c7e9377 100644
--- a/kmath-core/src/commonMain/kotlin/scientifik/kmath/operations/Algebra.kt
+++ b/kmath-core/src/commonMain/kotlin/scientifik/kmath/operations/Algebra.kt
@@ -33,9 +33,6 @@ interface Space<T> {
     operator fun T.times(k: Number) = multiply(this, k.toDouble())
     operator fun T.div(k: Number) = multiply(this, 1.0 / k.toDouble())
     operator fun Number.times(b: T) = b * this
-
-    fun Iterable<T>.sum(): T = fold(zero) { left, right -> add(left,right) }
-    fun Sequence<T>.sum(): T = fold(zero) { left, right -> add(left, right) }
 }
 
 /**
diff --git a/kmath-core/src/commonMain/kotlin/scientifik/kmath/operations/AlgebraExtensions.kt b/kmath-core/src/commonMain/kotlin/scientifik/kmath/operations/AlgebraExtensions.kt
new file mode 100644
index 000000000..6dec8bd79
--- /dev/null
+++ b/kmath-core/src/commonMain/kotlin/scientifik/kmath/operations/AlgebraExtensions.kt
@@ -0,0 +1,7 @@
+package scientifik.kmath.operations
+
+import scientifik.kmath.structures.Buffer
+import scientifik.kmath.structures.asSequence
+
+fun <T> Space<T>.sum(data : Iterable<T>): T = data.fold(zero) { left, right -> add(left,right) }
+fun <T> Space<T>.sum(data : Sequence<T>): T = data.fold(zero) { left, right -> add(left, right) }
\ No newline at end of file