From e3bdf568d8685199ccdb5f40c6da5066c2792cd0 Mon Sep 17 00:00:00 2001
From: Alex Voloshchenko <voloshchenkoal@gmail.com>
Date: Tue, 19 Mar 2019 22:57:30 +0200
Subject: [PATCH] Add code for chapter 5 in ts

---
 05_hash_tables/ts/01_price_of_groceries.ts | 11 +++++++++++
 05_hash_tables/ts/02_check_voter.ts        | 18 ++++++++++++++++++
 2 files changed, 29 insertions(+)
 create mode 100644 05_hash_tables/ts/01_price_of_groceries.ts
 create mode 100644 05_hash_tables/ts/02_check_voter.ts

diff --git a/05_hash_tables/ts/01_price_of_groceries.ts b/05_hash_tables/ts/01_price_of_groceries.ts
new file mode 100644
index 00000000..1c5228a6
--- /dev/null
+++ b/05_hash_tables/ts/01_price_of_groceries.ts
@@ -0,0 +1,11 @@
+interface HashTable<T> {
+    [key: string]: T;
+}
+
+const book: HashTable<number> = {};
+
+book['apple'] = 0.67;
+book['milk'] = 1.49;
+book['avocado'] = 1.49;
+
+console.log(book); // { apple: 0.67, milk: 1.49, avocado: 1.49 }
\ No newline at end of file
diff --git a/05_hash_tables/ts/02_check_voter.ts b/05_hash_tables/ts/02_check_voter.ts
new file mode 100644
index 00000000..1369b3dd
--- /dev/null
+++ b/05_hash_tables/ts/02_check_voter.ts
@@ -0,0 +1,18 @@
+interface HashTable<T> {
+    [key: string]: T;
+}
+
+const voted: HashTable<boolean> = {};
+
+function check_voter(name: string): void {
+    if (voted[name]) {
+        console.log('kick them out!');
+    } else {
+        voted[name] = true;
+        console.log('let them vote!');
+    }
+}
+
+check_voter("tom"); // let them vote!
+check_voter("mike"); // let them vote!
+check_voter("mike"); // kick them out!
\ No newline at end of file