I am displaying some records in table format on my `Visualforce Page`. I want to check if a `Map` instance is empty before displaying it. I have tried with:

```
.Size()

```

and also with:

```
rendered="{!If(NOT(ISBLANK(cons[0])),true,false)}"

```

But it is not working. I know one workaround to use a `Boolean` property in the controller and set the `rendered` attribute based on that. But I don't want to create extra variables in the controller. Can we achieve this logical check in the `Visualforce Page` itself?