That seems very straightforward– in this example there are only simple values in the block, and a block of code at the end to apply at each iteration. In REBOL, however, code is data, and that is what allows Carl to get fancy with his foreach– he uses it to iterate over and execute code just as if they were the simple values in my example. The expression starts off with: foreach [block err-word] [… and steps through the block in pairs, executing the following code at each step: if error? try block [...

I will soon make a list of basic tutorials for rebol in a future article for absolute beginner.

I am new to rebol. I was going through the code sample above but I don’t understand how the foreach loop above is working.

can someone with more expertise in rebol explain what the foreach loop in the example above is doing?

thank you