cache len

YieldsLabs · Jun 25, 2023 · 1f2d1d8 · 1f2d1d8
1 parent 48736e6
commit 1f2d1d8
Showing 1 changed file with 4 additions and 3 deletions.
diff --git a/ta_lib/overlap/src/vama.rs b/ta_lib/overlap/src/vama.rs
@@ -8,11 +8,12 @@ pub fn vama(
 ) -> Vec<Option<f64>> {
     let short_std = std_dev(close, short_volatility);
     let long_std = std_dev(close, long_volatility);
+    let len = close.len();
 
-    let mut alpha = vec![None; close.len()];
-    let mut vama = vec![None; close.len()];
+    let mut alpha = vec![None; len];
+    let mut vama = vec![None; len];
 
-    for i in 0..close.len() {
+    for i in 0..len {
         if let (Some(ss), Some(ls)) = (short_std[i], long_std[i]) {
             alpha[i] = Some((ss / ls) * alpha_factor);
         }