From 97654c1795dfb9e84792713911475310e4bc1a86 Mon Sep 17 00:00:00 2001
From: Lars Wirzenius <liw@liw.fi>
Date: Fri, 20 Mar 2020 08:25:39 +0200
Subject: Refactor: add Roadmap.goals

---
 src/map.rs | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/map.rs b/src/map.rs
index ff7e4f9..77b2feb 100644
--- a/src/map.rs
+++ b/src/map.rs
@@ -25,9 +25,14 @@ impl Roadmap {
         Roadmap { steps: vec![] }
     }
 
+    // Find steps that nothing depends on.
+    fn goals(&self) -> Vec<&Step> {
+        self.steps.iter().filter(|step| self.is_goal(step)).collect()
+    }
+
     /// Count number of steps that nothing depends on.
     pub fn count_goals(&self) -> usize {
-        self.steps.iter().filter(|step| self.is_goal(step)).count()
+        self.goals().len()
     }
 
     /// Iterate over step names.
-- 
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