Json Parser from Scratch in C# using TDD

An example of writing a json parser from scratch in c# using test driven development.

#csharp #json #parser

[jamesmussett]

I’d like to see you tackle performance optimisations and add some benchmarks, for the viewers benefit more then anything.

I had to implement one that was quite cut down feature wise that had zero heap allocations. It was for 100Hz message logging which is well beyond what the average developer would need.

It’s shocking how many allocations even the optimised Utf8JsonWriter does under the hood, let alone in the standard JsonSerializer.

[moke_codes]

Love this kind of video. We can get a glimpse of how other devs think. It's very interesting to see where we think alike, where we don't. I learn a lot with it.

[TheInkSpoots]

Loved the video, looking forward to seeing more

[nove]

Looking forward to seeing a formatted version, this gave me some ideas though. Nice sharing!

[DurgeshMarrathe]

What exactly you craete for this,
this is which one is console app and which one is class library can you please tell me how can i create json parser
where i pass my model for the json and i get back that values

[natha]

Hi there, I hope you see this comment because I do have a quick question: Do you consider this approach as fast as using something like IronPython and deserializing and flattening the files using Python scripts? I'm thinking of passing streams to the parser but was wondering how efficient it would be to go character by character for longer jsons. Thanks for the amazing insight and video! Also if you would like to get in touch I can also provide a CSV parser in exchange for some info, maybe you would like to make a video out of something similar

[abuzeromohammed]

What about talking about active directory logins

[th_CAV_Trooper]

At 7 minutes in I am thinking your bool test will pass if you pass "test", "tree", "trap", etc.. I'm curious to see if you fix that by the end of the video. I usually write unit tests for sad path first.