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Discovered arithmetic bug in the Number class, -4 + 5 is coming back as -1, not 1. It's getting the sign wrong somehow. I'll have to hunt that down.
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There's still more to do, however. It doesn't do math anymore, it produces
a script that can then be executed. Now we have to capture that script and
execute it.
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I'm doing some reading up on LR(n) parsers, I just sort of started without
thinking about it this time, not a great approach. I feel like it can't hurt
to have an update on how this works anyway. I think the idea was solid, but
I was trying to do too much at once.
One question is what my goal should be for this. I could just solve the
equation as we go, or I could generate code that will let us solve the equation.
The later is obviously attractive in that it will let us run an expression
more than once, and maybe even define functions. I like that.
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You no longer need to set the radix in the current radix.
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