Master programming by recreating your favorite technologies from scratch.
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Companies that support engineers with learning stipends
425 39
Definition for the redis challenge.
Shell 368 84
Definition for the sqlite challenge.
Shell 158 41
Rebuild complex systems from scratch
Language dashboard for CodeCrafters challenges.
Tester for the claude-code challenge.
Definition for the git challenge.
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Definition for the http-server challenge.
Definition for the interpreter challenge.
Definition for the dns-server challenge.
Definition for the claude-code challenge.
Definition for the bittorrent challenge.
Definition for the grep challenge.