add optioal prioritizer on search

1 files changed, 13 insertions, 0 deletions

diff --git a/src/vector.rs b/src/vector.rs
index dfd2d71..c058490 100644
--- a/src/vector.rs
+++ b/src/vector.rs
@@ -68,3 +68,16 @@ pub fn scalar_product(a : &FileVector, b : &FileVector) -> u64 {
     }
     c
 }
+
+pub fn match_vector(query : &FileVector, v : &FileVector) -> u64 {
+    let mut c = 0;
+    for (i, x) in query.iter() {
+        let s = x * (v.get(i).unwrap_or(&0));
+        if s == 0 {
+            return 0
+        } else {
+            c += s;
+        }
+    }
+    c
+}