Angular2, class runtime binding

[cool...@gmail.com]

Angular2 can bind css class as follows `[class.fa-train]="true"`, but can I bind them at runtime (something like `[class[key]]="true"`) ? For example, I have an array:

```javascript

['fa-train', 'fa-subway', 'fa-bed']

```

I would like to convert them as follows:

```javascript

<i class="fa fa-train"></i>

<i class="fa fa-subway"></i>

<i class="fa fa-bed"></i>

```

Thanks.

[Sander Elias]

Hi,

How about:

<i [class]="{{['fa-train', 'fa-subway', 'fa-bed'].join(' ')}}>

Regards

Sander