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Home>Users>François Koessler
François Koessler
Contribution
0Contributions
0Contributions played
Tests
2Tests completed
40Questions completed
or
Attended tests
Ruby
12% questions validées
1 test sessionLast activity : Dec 2, 2025
Rails
37% questions validées
1 test sessionLast activity : Dec 2, 2025
Informations
Profession : Back-end developerFavorite technologies

Daily Challenge

16 February 2026
One question per day to improve your general code knowledge!
Today :Swift #1/39
Mobile
Swift
Swift
daily challenge
Leaderboard
60points
1
1
0
0
1.
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EL Mostafa Fadili565 points
2.
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Maxime Chenaud560 points
3.
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Emilie420 points
4.
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Matthieu Sanchez365 points
5.
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Andy350 points
57.
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François Koessler (You)60 points
Last leaderboard calculation: on 16 Feb 2026 at 12:43:42