On Tuesday, 2 December 2014 at 21:41:28 UTC, Vladimir Panteleev
wrote:
Enter DCaptcha, a question-answer challenge tailored for D programmers. Its goals are to challenge posters of suspicious-looking content with questions that should be easy to answer to D programmers, and impossible for non-technical people with no incentive to learn or research stuff (i.e. spammers). DCaptcha is already in use on the D wiki (wiki.dlang.org), with great success - DCaptcha's debut cut the short-lived explosion in wiki spam to zero.


I think this is a bad idea because developers new to the language
will be turned away. Also i think a lot of these 'easy' questions
are just too hard. I've tried the demo and found it fustrating
that i need a few trys to get them right.

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