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 }

Tell me an array [1,2,34,5,6,7,8,9], product it using a method?

Explain about ruby names?

Explain ruby strings.

Explain about ruby code blocks?

What is the difference between #== and #eql??

What are ruby blocks.

What is the difference between a class and a module?

Please explain the three levels of access control for ruby methods?

Are numeric objects mutable in ruby?

Explain break statement in Ruby?

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

What happens when a value is too big for fixnum?

Describe the environment variables present in Ruby?

Who is the developer of Ruby?

how many ways you can create a concatenating string?

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