We use currying at work to inject dependencies. E.g. `sendEmail(mockEmailService)(to, subject, body) ` I find it helps to differentiate between side-effecting

We use currying at work to inject dependencies. E.g. `sendEmail(mockEmailService)(to, subject, body) ` I find it helps to differentiate between side-effecting dependencies and parameters, making code purer, easier to test, more scalable etc.