Added proper covarience. Whoops.

2 files changed, 4 insertions, 4 deletions

diff --git a/core/source/core/scala/org/hashtree/stringmetric/Algorithm.scala b/core/source/core/scala/org/hashtree/stringmetric/Algorithm.scala
index e334d20..cd46150 100755
--- a/core/source/core/scala/org/hashtree/stringmetric/Algorithm.scala
+++ b/core/source/core/scala/org/hashtree/stringmetric/Algorithm.scala
@@ -1,6 +1,6 @@
 package org.hashtree.stringmetric
 
 /** Marks those which leverage traits of a stand alone algorithm. */
-trait Algorithm[T, C] {
-	def compute(t: T)(implicit c: C): Option[T]
+trait Algorithm[T, F <: Filter[T]] {
+	def compute(t: T)(implicit f: F): Option[T]
 }
\ No newline at end of file
diff --git a/core/source/core/scala/org/hashtree/stringmetric/Metric.scala b/core/source/core/scala/org/hashtree/stringmetric/Metric.scala
index 218285f..9542dcf 100755
--- a/core/source/core/scala/org/hashtree/stringmetric/Metric.scala
+++ b/core/source/core/scala/org/hashtree/stringmetric/Metric.scala
@@ -1,6 +1,6 @@
 package org.hashtree.stringmetric
 
 /** Marks those which leverage traits of a metric. */
-trait Metric[T, C] {
-	def compare(t1: T, t2: T)(implicit c: C): Option[AnyVal]
+trait Metric[T, F <: Filter[T]] {
+	def compare(t1: T, t2: T)(implicit f: F): Option[AnyVal]
 }
\ No newline at end of file