Which language has the best loops? See for yourself, with our side-by-side (loop-for-loop) Python vs. Kotlin showdown. Find more stories in this week’s report.

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I built a coding tutor that won't let me cheat my way through it. Here's the prompt.

Eric Katz writes about federal agency operations and management. His deep coverage of Veterans Affairs, Homeland Security, the Environmental Protection Agency and U.S. Postal Service has earned him ...

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Dan Lamothe joined The Washington Post in 2014 to cover the U.S. military. He has written about the Armed Forces since 2008, traveling extensively, embedding with five branches of service and covering ...

Will Kenton is an expert on the economy and investing laws and regulations. He previously held senior editorial roles at Investopedia and Kapitall Wire and holds a MA in Economics from The New School ...

Carla Tardi is a technical editor and digital content producer with 25+ years of experience at top-tier investment banks and money-management firms. Robert Kelly is managing director of XTS Energy LLC ...