Исходники и презентации

lessons/maps/map_operations/main.go

@@ -0,0 +1,36 @@
+package main
+
+func readFromNilMap() {
+	var data map[int]int
+	_ = data[100]
+}
+
+func deleteFromNilMap() {
+	var data map[int]int
+	delete(data, 100)
+}
+
+func writeToNilMap() {
+	var data map[int]int
+	data[100] = 100
+}
+
+func rangeByNilMap() {
+	var data map[int]int
+	for range data {
+	}
+}
+
+func rewriteExistingKey() {
+	data := make(map[int]int)
+	data[100] = 500
+	data[100] = 1000
+}
+
+func deleteNonExistingKey() {
+	data := make(map[int]int)
+	delete(data, 100)
+}
+
+func main() {
+}