Rename findAny to findFirst

Author: Takashi Kinjo

src/ii_collections/n15AllAnyAndOtherPredicates.kt

@@ -33,7 +33,7 @@ fun Shop.countCustomersFrom(city: City): Int {
     todoCollectionTask()
 }
 
-fun Shop.findAnyCustomerFrom(city: City): Customer? {
-    // Return a customer who lives in the given city, or null if there is none
+fun Shop.findFirstCustomerFrom(city: City): Customer? {
+    // Return the first customer who lives in the given city, or null if there is none
     todoCollectionTask()
 }

test/ii_collections/N15AllAnyAndOtherPredicatesKtTest.kt

@@ -22,8 +22,8 @@ class N15AllAnyAndOtherPredicatesKtTest {
         assertEquals(2, shop.countCustomersFrom(Canberra))
     }
 
-    @Test fun testAnyCustomerFromCity() {
-        assertEquals(customers[lucas], shop.findAnyCustomerFrom(Canberra))
-        assertEquals(null, shop.findAnyCustomerFrom(City("Chicago")))
+    @Test fun testFirstCustomerFromCity() {
+        assertEquals(customers[lucas], shop.findFirstCustomerFrom(Canberra))
+        assertEquals(null, shop.findFirstCustomerFrom(City("Chicago")))
     }
 }