Example ARM template with functions 2

arm_template_with_functions_2.json

{
  "$schema": "https://schema.management.azure.com/schemas/2015-01-01/deploymentTemplate.json#",
  "contentVersion": "1.0.0.0",
  "parameters": {
    "storageAccountType": {
      "type": "string"
    }
  },
  "variables": {
    "storageAccountName": "[concat('sa', uniquestring(resourceGroup().id))]"
  },
  "resources": [
    {
      "type": "Microsoft.Storage/storageAccounts",
      "name": "[variables('storageAccountName')]",
      "apiVersion": "2016-01-01",
      "location": "[resourceGroup().location]",
      "sku": {
          "name": "[parameters('storageAccountType')]"
      },
      "kind": "Storage", 
      "properties": {
      }
    }
  ]
}