# ArrayEx.IndexOf examples

Examples for [IndexOf](https://developer.rhino3d.com/api/gh2/type/grasshopper2.extensions.arrayex/indexof.md) in Grasshopper2.Extensions.ArrayEx.

## C#

```cs
using Grasshopper2.Extensions;

// As an extension method
int result = source.IndexOf(pattern);

// As a static method
result = ArrayEx.IndexOf(source, pattern);
```

## Python

```python
import clr
clr.AddReference('Grasshopper2')
import Grasshopper2.Extensions
clr.ImportExtensions(Grasshopper2.Extensions)

# As an extension method
result = source.IndexOf(pattern)

# As a static method
result = Grasshopper2.Extensions.ArrayEx.IndexOf(source, pattern)
```