# For

A `for` flow allows a block of code to be executed once for each item in an array.  You can change the order of iteration by using array transformers such as `.sorted()` or `.reversed()` on the source data. Additionally, nested loops are fully supported.

{% hint style="info" %}
If you want to iterate over dictionary, use [`map`](/supernova-dsm/pulsar-language/flows/map.md) flow instead.
{% endhint %}

### Syntax

Basic syntax of `for` flow is as follows:

```swift
{[ for [property-name] in [statement] ]}
    Body, optionally using {{ value }}
{[/]}
```

With the following required attributes:

* `property-name` - the newly created property where iterated data is stored
* `statement` - statement to be evaluated to retrieve data for the iterator. Array is expected

For example, a `for` flow be used to create lists, menus, and similar structures from sourced data. Let's assume we have a variable `users` defined that contains following data:

```javascript
[{
    "name": "Jiri",
    "type": "member"
}, {
    "name": "Artem",
    "type": "admin"
},{
    "name": "Ydus",
    "type": "member" 
},{
    "name": "Oskar",
    "type": "visitor"
}
```

You can iterate on user data by defining a new variable `user` where each item in the array gets stored in each iteration:

```markup
<h1>Team Members</h1>
<ul>
    {[ for user in users ]}
    <li>{{ user.name.capitalized() }} ({{ user.type }})</li>
    {[/]}
</ul>
```

With each iteration, data in `user` is different, resulting in the following output:

```markup
<h1>Team Members</h1>
<ul>
    <li>JIRI (Member)</li>
    <li>ARTEM (Admin)</li>
    <li>YDUS (Member)</li>
    <li>OSKAR (Visitor)</li>
</ul>
```


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