# CollectionExtensionMethods.CommonValue<T> examples

Examples for [CommonValue<T>](https://developer.rhino3d.com/api/gh2/type/grasshopper2.extensions.collectionextensionmethods/commonvalue.md) in Grasshopper2.Extensions.CollectionExtensionMethods.

## C#

```cs
using Grasshopper2.Extensions;

// As an extension method
bool result = collection.CommonValue(comparison, out T commonValue);

// As a static method
result = CollectionExtensionMethods.CommonValue(collection, comparison, out commonValue);
```

## Python

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

# As an extension method
result, common_value = collection.CommonValue(comparison)

# As a static method
result, common_value = Grasshopper2.Extensions.CollectionExtensionMethods.CommonValue(collection, comparison)
```