In many cases, you'll want to go through an entire series, executing code for each item in the series, using something easier than next. Red has the foreach and forall words to do just that.
The foreach word executes a code block for each item in the series:
names: ["John" "Dave" "Jane"]foreach name names [print name]
This prints out the following:
John DaveJane
You should choose a descriptive word for the iteration variable (here, we have used name). It takes on the values of the items one by one, in order.
The forall word also moves through the series, but it executes a code block for all the items together, and combines this with a next at each iteration:
forall names [print names]
This ...
