“Write a query to find the most recently released movie by each director and order the result by the release dates.”
I’m confused on the second query, in func: uid(maxDate).
After the first query, won’t maxDate be a mapping of the date of each director’s latest film? Don’t know how they manage to extract a uid out of a date
Hey @gorillastanley
Every variable also has the information of the UID. So in order to extract the value from it use val(variable) and to extract UID uid(variable) can be used.
Thanks, just read the docs:
Value variables store scalar values. Value variables are a map from the UIDs of the enclosing block to the corresponding values.
Cheers!
