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![Note] Build an Instagram Clone — Check if Username Already Exists (Part 25) | by Alex Yu | Engineer&Cat | Medium](https://miro.medium.com/max/1400/1*C5zR71vKpJJRn2DoGg-h4g.jpeg "Note] Build an Instagram Clone — Check if Username Already Exists (Part 25) | by Alex Yu | Engineer&Cat | Medium")
Note] Build an Instagram Clone — Check if Username Already Exists (Part 25) | by Alex Yu | Engineer&Cat | Medium
I try to do a project using firebase . But i dont know how to write code to check whether a firebase tag already exist or not in my firebase realtime database? -
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