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 how can you declare a block in ruby?

How to open a file in Ruby?

What are the loops in ruby?

what is Interpolation in Ruby?

Explain do while loop in ruby.

Explain about the command line options?

How to use sql db or mysql db. Without defining it in the database.yml

What is concatenating string in ruby. In how many ways you can create a concatenating string.

Who is the developer of Ruby?

In Ruby, it explains about the defined operator?

How would you freeze an object in ruby? Can you provide a simple example?

Explain about interpolation?

What are some built-in ruby class exceptions.

Explain about garbage collection feature of ruby?

What are ruby blocks.

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