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Is it alright to post an answer to an old challenge, in a language that hasn't been posted before?

I'm specifically asking about the following question: Link

I happened across it, and wanted to post a new answer with PowerShell. I noticed, though, that the question has been inactive for many months. Would it still be OK to post my answer, and "revive" an old question?

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    \$\begingroup\$ Yes, why not? This challenge is answered only after 4 years. \$\endgroup\$ – user202729 Mar 12 '18 at 11:31
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    \$\begingroup\$ @user202729 It's a valid question. Many forums frown on "necroposting," or adding new replies to old threads. It's reasonable to suppose the same rule might apply here. \$\endgroup\$ – DLosc Mar 20 '18 at 23:29
  • \$\begingroup\$ Possible duplicate. \$\endgroup\$ – user202729 Apr 16 '18 at 14:34
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Yes

It's not only acceptable, but also encouraged! There are several incentives for answering old questions, and there are even two badges, Revival and Necromancer, that you can get this way.

Welcome to our site, and thanks for your desire to contribute!

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