From 59f47cadefafc126b9c215c511f0fc5adeeabf34 Mon Sep 17 00:00:00 2001
From: Teddy Wing
Date: Sun, 15 Apr 2018 13:30:29 +0200
Subject: meetup_rss: Create `join_nonempty` function

Move the join logic from `description_header` into a new function so we
can reuse it.
---
 src/meetup_rss.rs | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

(limited to 'src/meetup_rss.rs')

diff --git a/src/meetup_rss.rs b/src/meetup_rss.rs
index 80409f9..4055ac0 100644
--- a/src/meetup_rss.rs
+++ b/src/meetup_rss.rs
@@ -73,12 +73,17 @@ fn description_header(event: &Event) -> String {
         "".to_owned()
     };
 
-    [when, place]
+    join_nonempty(&[when, place], "\n")
+}
+
+/// Joins a slice of `String`s with `separator`, filtering out empty strings.
+fn join_nonempty(strings: &[String], separator: &str) -> String {
+    strings
         .iter()
         .filter(|s| !s.is_empty())
         .map(|s| s.to_owned())
         .collect::<Vec<String>>()
-        .join("\n")
+        .join(separator)
 }
 
 
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