HeyJaredCoding Challenges
A weekly Coding Challenge to help software engineers level up.
- Indexed issues, last 90 days
- 12
- Latest publication
- Sep 26, 2026
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- Earliest in this view
- Jul 25, 2026
Latest issues
Coding Challenge #138 - DMB (opens the original)
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Hi, this is John with this week’s Coding Challenge.🙏 Thank you for being a subscriber, I’m honoured to have you as a reader. 🎉If there is a Coding Challenge you’d like to see, please let me know by replying to this email📧Coding Challenge #139 - DBMThis challenge is to build your own version of DBM, the classic Unix key-value database library.DBM has been around since the earliest days of Unix. It was written by Ken Thompson and released by AT&T in 1979. The name stands for Database Manager, and
Coding Challenge #137 - fzf (opens the original)
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Hi, this is John with this week’s Coding Challenge.🙏 Thank you for being a subscriber, I’m honoured to have you as a reader. 🎉If there is a Coding Challenge you’d like to see, please let me know by replying to this email📧Coding Challenge #137 - fzfThis challenge is to build your own version of fzf, the command-line fuzzy finder.fzf is one of those tools that changes how you use a terminal. You pipe a list of things into it, start typing a few letters, and it narrows a list of a million items dow
Coding Challenge #136 - Hyperfine (opens the original)
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Hi, this is John with this week’s Coding Challenge.🙏 Thank you for being a subscriber, I’m honoured to have you as a reader. 🎉If there is a Coding Challenge you’d like to see, please let me know by replying to this email📧Coding Challenge #136 - HyperfineThis challenge is to build your own version of hyperfine, a command-line benchmarking tool.When we want to benchmark the performance of a program or script the easy answer is to use time. If the old tool took 45 minutes and the new one takes 4 mi
Coding Challenge #135 - Voice Dictation App (opens the original)
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Hi, this is John with this week’s Coding Challenge.🙏 Thank you for being a subscriber, I’m honoured to have you as a reader. 🎉If there is a Coding Challenge you’d like to see, please let me know by replying to this email📧Coding Challenge #35 - Voice Dictation AppThis challenge is to build your own private voice dictation app. It’s a simple version of something like SuperWhisper or Whispr Flow.Most dictation tools send your voice off to a server in the cloud. That works, but it means you need an
Coding Challenge #134 - Agentic Engineering Graph (opens the original)
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Hi, this is John with this week’s Coding Challenge.🙏 Thank you for being a subscriber, I’m honoured to have you as a reader. 🎉If there is a Coding Challenge you’d like to see, please let me know by replying to this email📧Coding Challenge #134 - Agentic Engineering GraphThis challenge is to build your own agentic engineering graph. So what is an agentic engineering graph? It’s a small orchestration system that runs an autonomous coding loop: plan, wri
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