As author of web-site with small coding challenges (CodeAbbey) I'd say that some people like them, but generally many developers don't. There are reasons:
challenges or problems often are too easy or too hard for any given dev
they are usually small, not something like good test-project as may help learning some technical skills (some framework, db etc)
Still they are worth for many - giving good practice of doing casual programming things for newbies - or providing puzzles for experienced coders to extend their knowledge (as IT nowadays is too vast for anyone to know everything).
So don't expect much. Just keep trying :)
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As author of web-site with small coding challenges (CodeAbbey) I'd say that some people like them, but generally many developers don't. There are reasons:
Still they are worth for many - giving good practice of doing casual programming things for newbies - or providing puzzles for experienced coders to extend their knowledge (as IT nowadays is too vast for anyone to know everything).
So don't expect much. Just keep trying :)