Coding Challenge: Adding a Check

Problem statement

Suppose we’re working on the application from the last challenge. We want to extend it with an additional function called checkDecentHour, which takes a number and returns a left with the way too early stringwhen the hour is before8`. In our application function, we now want to check whether it’s way too early after checking whether the hour is valid. Instead of returning a default error message as we did earlier, we want to give back whatever error we had.

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