Исходники и презентации

lessons/slices_and_arrays/collection_optimization/main.go

@@ -0,0 +1,22 @@
+package main
+
+import (
+	"fmt"
+	"runtime"
+)
+
+func printAllocs() {
+	var m runtime.MemStats
+	runtime.ReadMemStats(&m)
+	fmt.Printf("%d MB\n", m.Alloc/1024/1024)
+}
+
+func main() {
+	data := make([]byte, 1<<31)
+
+	printAllocs()
+	runtime.GC()
+	printAllocs()
+
+	fmt.Println(len(data))
+}