Add js-bench, odin-lists

js-bench/for_vs_map.js

@@ -0,0 +1,34 @@
+const x = [];
+for (let i = 0; i < 50_000_000; i++) {
+    x[i] = Math.random();
+}
+
+const for_test_list = [...x]
+const for_timings = []
+for (let i = 0; i < 10; i++) {
+    const startTime = performance.now()
+    for (let i = 0; i < for_test_list.length; i++) { 
+        for_test_list[i] * 2
+    } 
+    const timeElapsed = performance.now() - startTime
+    for_timings.push(timeElapsed)
+    console.log(`for#${i + 1} time: ${timeElapsed.toFixed(4)} ms`)
+}
+console.log(`Average 'for' time: ${(for_timings.reduce((a,b) => a+b)/for_timings.length).toFixed(4)} ms`)
+print_xvals(for_test_list)
+
+const map_test_list = [...x]
+const map_timings = []
+for (let i = 0; i < 10; i++) {
+    const startTime = performance.now()
+    map_test_list.map(val => val*2)
+    const timeElapsed = performance.now() - startTime
+    map_timings.push(timeElapsed)
+    console.log(`map#${i + 1} time: ${timeElapsed.toFixed(4)}`)
+}
+console.log(`Average 'map' time: ${(map_timings.reduce((a,b) => a+b)/for_timings.length).toFixed(4)} ms`)
+print_xvals(map_test_list)
+
+function print_xvals(x) {
+    console.log(x[0], x[Math.floor(x.length / 2)], x[x.length - 1])
+}