Parts 5 and 6 of the 4-part series 49
The title says it all. I was bothered by a few things in the Shunting Yard Algorithm (actually many more things), but I felt compelled to fix two of those things.
So if you have a look at the album, you’ll notice 2 more videos:- Video 5 of 4: Remove the need for spaces between tokens.
- Video 6 of 4: Remove duplication of operators in algorithm and tokenizer.
Hope these are interesting or at least entertaining.
Mmm, very Douglas Adams. :)
thank you so much!!!
Thanks a lot Brett.
It looks like you broke support for numbers with more than a single digit in the process of building the tokenizer. Sadly, there wasn’t a test for that.
You are correct, when I wrote \d+ versus \d, right?
It’s very easy to over code when using regular expressions. I’m guilty of doing it because I’ve used regular expressions so much, in so many contexts over the year.
This is where having a live pair partner slapping me on the wrist would be a good thing.
Good catch.
Yeah,
I noticed quite a few times that I wanted to give you a call just to fix that typo. (You make a lot of typos ;-)) In the videos, you’ll usually notice these things five minutes after. I figured you’d find this bug somewhere in video 6 but you didn’t :)
Anyways, thanks again. The videos helped a lot.
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