Covariance and Contravariance in Scala
I spent some time trying to figure out co- and contra-variance in Scala, and it turns out to be both interesting…
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How Atlassian implemented its own multi-factor authentication library with time-based one-time passwords
In July 2022, Atlassian implemented 1time, the company’s own multi-factor authentication (MFA) library with time-based one-time passwords (TOTP), moving away from…
