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At the lowest level I'm reluctantly starting to see the need for errors
that stop the program in its tracks. Only way to avoid memory corruption
and security issues. But beyond that core I still want to be as lenient
as possible at higher levels of abstraction.
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Always show recipe name where error occurred. But don't show internal
'interactive' name for sandboxes, that's just confusing.
What started out as warnings are now ossifying into errors that halt all
execution. Is this how things went with C and Unix as well?
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Thanks Jack and Caleb Couch for the idea.
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Finally terminate the experiment of keeping debug prints around. I'm
also going to give up on maintaining counts.
What we really need is two kinds of tracing:
a) For tests, just the domain-specific facts, organized by labels.
b) For debugging, just transient dumps to stdout.
b) only works if stdout is clean by default.
Hmm, I think this means 'stash' should be the transient kind of trace.
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Still iterating on the right way to handle incorrect number of
ingredients. My first idea of creating null results doesn't really work
once they're used in later instructions. Just add a warning at one place
in the run loop, but otherwise only add products when there's something
to save in them.
Undoes some work around commit 1886.
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For example:
x:number <- index y:address:array:number, 3
(forgetting to do a lookup)
Thanks Caleb Couch.
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Also standardized warnings.
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More verbose, but it saves trouble when debugging; there's never
something you thought should be traced but just never came out the other
end.
Also got rid of fatal errors entirely. Everything's a warning now, and
code after a warning isn't guaranteed to run.
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Starting to feel some need to test this persistence support. Next time
I'll create a fake storage handle and support for 'assume-storage
filename'.
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No restore. We'll have to do that manually for the first lesson.
The version control is also super ugly; every save creates a new commit.
But that's ok; version control is just the backup of last resort.
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We want to avoid accidentally mixing lessons into ourselves. Require
users to git-enable it first.
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Very rudimentary ability to read/write from file+version control. No
control over name.
Recipes now saved. But what to do about sandboxes?
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