Show HN: DataLemur – Ace the SQL Interview! I just launched a new free SQL practice platform today called DataLemur! I'm the author of Ace the Data Science Interview, and a lot of our readers wanted to practice the SQL questions from the book, so we decided to make DataLemur free and open! Even if you aren't job hunting, these tricky SQL questions are pretty fun to practice on. https://datalemur.com/ August 25, 2022 at 01:28AM
Show HN: StreetComplete, an OpenStreetMap Editor for Humans StreetComplete is an OpenStreetMap[0] editor directed at people who want to contribute and want to do this using their smartphone, without learning how to edit things[1]. It is available as an Android application. It is intended to be used as one walks, with quests appearing as markers on the map. Selecting a marker allows one to answer a simple question. The answer will be added to the OpenStreetMap database, with app handling selecting objects for editing, transforming answer into OSM tags and making edits. OpenStreetMap account is needed to apply edits, but it is possible to start without it, make some edits and login/register later. Note: I am not the main author, but I am one of the active contributors. Github page is at https://ift.tt/2g8lasH and https://ift.tt/3nR9PzS shows what was recently released. [0]OpenStreetMap is a Wikipedia of maps, available on the open licence. This dataset is already used for many interestin...
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