for and foreach demo

foreach-demo/provider.tf

@@ -0,0 +1,4 @@
+provider "aws" {
+  region = var.AWS_REGION
+}
+

foreach-demo/securitygroup.tf

@@ -0,0 +1,12 @@
+resource "aws_security_group" "example" {
+  name = "example" # can use expressions here
+
+  dynamic "ingress" {
+    for_each = [22, 443]
+    content {
+      from_port   = ingress.value
+      to_port     = ingress.value
+      protocol    = "tcp"
+    }
+  }
+}

foreach-demo/vars.tf

@@ -0,0 +1,4 @@
+variable "AWS_REGION" {
+  type    = string
+  default = "eu-west-1"
+}