diff --git a/src/trivial_example_of_hashmap.ts b/src/trivial_example_of_hashmap.ts
new file mode 100644
index 0000000..8f1db31
--- /dev/null
+++ b/src/trivial_example_of_hashmap.ts
@@ -0,0 +1,18 @@
+let websites = [
+    "https://google.com",
+    "https://lapresse.ca",
+    "https://theguardian.com"
+];
+
+function computeTimeToLoad(url: string): number{
+    return 98;
+}
+
+function computeAllLoadTime(websites: string[]): Map<string, number>{
+    let ret = new Map<string, number>();
+    for(let website of websites){
+        ret.set(website, computeTimeToLoad(website));
+    }
+    return ret;
+}
+