It's super easy to share a function from your Blockspring library with a friend or teammate.
If your function is public, you can just share a url to its Blockspring homepage. If your function is private, you'll need to add the user as a collaborator.
A collaborator can see, run, and edit your function regardless if it's public or private.
To add a collaborator, visit your function's homepage, click the dropdown on "Edit", then "Edit Collaborators", and then type in your collaborator's Blockspring username.
Your collaborator will receive an email notification and can then see, run, and edit your function on their own.