Remove nulls from a list using the C# component in Grasshopper

This simple script removes nulls from a list in Grasshopper. It preserves all data types and other data that you pass through it.

remove-nulls-grasshopper

To set up, copy the code below into a standard C# component in Grasshopper. Set input x as a list. Feed your list into x. The return ‘A’ will return the list x with nulls removed.

    var rtnlist = new List<object>();

    foreach (object obj in x)
    {
      if (obj != null) rtnlist.Add(obj);
    }

    A = rtnlist;

The other C# (counting nulls) in the image came from this post.

Add a Comment

Your email address will not be published. Required fields are marked *

Time limit is exhausted. Please reload CAPTCHA.