https://blog.ast.moe/en/tags/personal-projects/Recent posts: GorimuchuHugohttps://blog.ast.moe/en/blog/2026-09-28/Mon, 28 Sep 2026 12:42:00 +0900https://blog.ast.moe/en/blog/2026-09-28/<p>In 2018 I wrote an article titled “I Want to Validate Phone Numbers.” It was a brief post introducing the newly started <a href="https://github.com/ieee0824/go-tel-num-parser-jp">go-tel-num-parser-jp</a> project and showing how to use <code>IsTelNumber</code>. (<a href="https://blog.ast.moe/blog/2018-11-08/">source</a>)</p> <p>I made a few more tweaks afterward, but the repository’s updates stopped in 2020. When I revisited it after a long time, I found that the phone number categories were still the same as back then, and there were some issues with the validation method. So, by looking at the currently published number information, I updated the number categories and validation logic (see pull request #4). (<a href="https://github.com/ieee0824/go-tel-num-parser-jp/pull/4">PR #4</a>)</p>