Question d'entretien d'embauche Housing.com: Ds/algo 1. Staircase Problem ... | Glassdoor.fr

Question d'entretien d'embauche

Entretien de Lead ROR Dev Gurgaon, Haryana (Inde)

Ds/algo 1. Staircase Problem Fibonacci Series 2. Level

  Order Tree Order Traversal ROR 1. Diff between require and include 2. The syntax of validates_uniqueness_of function in ActiveRecord (was asked to write the code of putting validation on 2 fields). I told him that this is the function which would solve this problem but I would check the library for syntax and parameters that can be passed to this function. DB: 1. Write a query to update the missing values of table 1 from table 2 (Again he was adamant that how can I forget the "set" keyword in the update query). Why would I need to remember these things when there are libraries you can reference. I know how it can be done and whether this is doable or not and I guess that should be sufficient.
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