addon/macros/join.js
import computed from 'ember-macro-helpers/computed';
/**
Joins the strings in the given property keys.
Example
```javascript
var picard = Ember.Object.extend({
firstName: 'Jean-Luc',
lastName: 'Picard',
fullName: join('firstName', 'lastName', ' ')
}).create();
picard.get('fullName'); // 'Jean-Luc Picard'
```
@method join
@for macros
@param *arguments The last argument is the separator string.
The rest are the dependent keys with the strings to join, string literals or other
computed property macros
@return {String} The joined string.
*/
export default function(...args) {
var separator = args.pop();
return computed(...args, (...values) => {
return values.join(separator);
});
}