methods-to-properties.6 : convert CampSites to Kotlin

Duncan McGregor · dmcg · commit 4801f75d3ae9 · 2021-06-23T22:30:15.000+01:00
diff --git a/src/main/java/travelator/CampSites.kt b/src/main/java/travelator/CampSites.kt
@@ -1,15 +1,10 @@
 package travelator
 
-import java.util.stream.Collectors
-
-fun Set<CampSite>.sitesInRegion(
+fun Iterable<CampSite>.sitesInRegion(
     countryISO: String,
     region: String
-): Set<CampSite> {
-    return stream()
-        .filter { campSite: CampSite ->
-            campSite.countryCode == countryISO &&
-                campSite.region.equals(region, ignoreCase = true)
-        }
-        .collect(Collectors.toUnmodifiableSet())
-}
+): Set<CampSite> =
+    filter { site ->
+        site.countryCode == countryISO &&
+            site.region.equals(region, ignoreCase = true)
+    }.toSet()
