Ch6 Advanced Notes

There are a bunch of different types of fold. I have not distinguished between them because most of my audience is not ready for that. If you’re reading this, maybe you are ready to dive in a little deeper.

Here are some resources:

• Explanation of the strict and non-strict versions of left and right fold
• A digested version of that article created for Stack Overflow.
• A more sophisticated (and popular) article about the speed of different variants of fold.