Ruby: What is the difference between @ and @@?
SQL: What is the difference between outer and inner join?

Question

Ruby: What is the difference between @ and @@?
SQL: What is the difference between outer and inner join?

krypton · Accepted Answer

What was the question like on codility ?

Utilisateur anonyme · Answer

How are the codility tests?

Utilisateur anonyme · Answer

It's essential to demonstrate that you can really go deep... there are plenty of followup questions and (sometimes tangential) angles to explore.


There's a lot of  Backend Engineer experts who've worked at Grab, who provide this sort of practice through mock interviews. There's a whole list of them curated on Prepfully.


prepfully.com/practice-interviews

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