Ruby Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Ruby Interview Questions

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Can you please explain what is the difference between string and symbol?

Tell me the role of modules and mixins in ruby?

Tell me what is the command to create a migration?

Tell me what is the difference between active support's “hashwithindifferent” and ruby's “hash” ?

Do you know about dig, float and max?

Do you know how ruby looks up a method to invoke?

As you know ruby provides four types of variables. List them and provide a brief explanation for each?

Tell me what are blocks and procs?

Do you know what is the defined operator?

Tell us the types of variables available in ruby class?

Explain me what is the difference between symbol and string?

Tell me what is the role of sub-directory app/controllers and app/helpers?

Please explain what is mvc and why do we use it?

Tell me what is the difference between calling super() and super call?

Tell me how symbol is different from variables?

Un-Answered Questions { Ruby }

Explain about garbage collection feature of ruby?

Explain when self.up and self.down method is used?

Explain some of the looping structures available in ruby?

Does hash use “ #==” or “#eql?” To compare hash keys?

Explain the concepts and capabilities of garbage collection feature of Ruby?

Tell me how can we define ruby regular expressions?

Is ruby a statically typed or a dynamically typed language?

Tell me can you call a private method outside a ruby class using its object?

Explain the use of retry statement in ruby?

Are numeric objects mutable in ruby?

what is class libraries in Ruby?

What are the object-oriented programming features supported by ruby?

What is mvc and why do we use it?

Tell us how would you implement hash in ruby internally?

Tell me what is the difference between active support's “hashwithindifferent” and ruby's “hash” ?

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