Before: relying on IDE. Lately I realised I didn't know any packages/namespaces (java, c# respectively) until I read the name and decided OK this could be the one I need. And I'm talking about main language features not just libraries.
After I've changed that habit I still copy paste stuff for JWT or any kind of filter/middleware then read code and change what I don't like, don't need or need differently implemented. Shame on me.
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