{{#each}}
Iterates over an array, rendering its block for each item.
Syntax
{{#each items as |item index|}} ... {{/each}} Returns
block — Renders the block once per item.
Examples
<ul>
{{#each @todos key="id" as |todo index|}}
<li>{{index}}. {{todo.title}}</li>
{{else}}
<li>No todos yet</li>
{{/each}}
</ul>
Notes
Use `key="id"` so Ember reuses DOM by identity instead of position,
improving performance and preserving state. The {{else}} block renders
when the list is empty. {{#each-in}} iterates objects.