Idea:
I know cache-related ideas have already been posted (cache macros; cache tools), but I would like it if cache were simply built into every tool, similar to the way it is on the Input Tool.
Reasoning:
During workflow development, I'll run the workflow repeatedly, and especially if there is sizeable data or an R tool involved, it can get really time consuming.
Implementation ideas:
I can see where managing cache could be tricky: in a large workflow processing a lot of data, nobody would want to maintain dozens of copies of that data. But there may be ways of just monitoring changes to the workflow in order to know if something needs to be rebuilt or not: e.g. suppose I cache a Predictive Tool, and then make no changes to any tool preceeding it in the workflow... the next time I run, the engine should be able to look at "cache flags" and/or "modified tool flags" to determine where it should start: basically start at the "furthest along cache" that has no "modified tools" preceeding it.
Anyway, just a thought.
