What is the importance of rjs?
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What is a webrick web server?
what is Rails Migration?
At is cross-site request forgery (csrf)?
when self.up and self.down method is used?
What are class libraries?
How many types of variables are available in ruby class?
Whats the difference between symbol and string?
What is a proc ?
Explain view in rails?
what is the difference between destroy and delete?
how can we define Ruby regular expressions?
Tell me what is the difference between the observers and callbacks in ruby on rails?