Added a check for wordArray not nil to the guard statement in insertWordsIntoTrie.

rzaccone · rzaccone · commit b48107ff77ec · 2017-01-03T18:32:52.000-05:00
diff --git a/Trie/Trie/TrieTests/TrieTests.swift b/Trie/Trie/TrieTests/TrieTests.swift
@@ -51,10 +51,8 @@ class TrieTests: XCTestCase {
 
     /// Inserts words into a trie.  If the trie is non-empty, don't do anything.
     func insertWordsIntoTrie() {
-        guard trie.count == 0 else {
-            return
-        }
-        for word in self.wordArray! {
+        guard let wordArray = wordArray, trie.count == 0 else { return }
+        for word in wordArray {
             trie.insert(word: word)
         }
     }

Original file line number	Diff line number	Diff line change
`@@ -51,10 +51,8 @@ class TrieTests: XCTestCase {`
`51`	`51`
`52`	`52`	`/// Inserts words into a trie. If the trie is non-empty, don't do anything.`
`53`	`53`	`func insertWordsIntoTrie() {`
`54`		`- guard trie.count == 0 else {`
`55`		`- return`
`56`		`- }`
`57`		`- for word in self.wordArray! {`
	`54`	`+ guard let wordArray = wordArray, trie.count == 0 else { return }`
	`55`	`+ for word in wordArray {`
`58`	`56`	`trie.insert(word: word)`
`59`	`57`	`}`
`60`	`58`	`}`