Interested to Buy Any Domain ? << Click Here >> for more details...
Whats the difference between symbol and string?
- 2 Answers
- 10593 Views
- I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Answer / abhishek shukla
Symbol refers to the same memory location where string
generates a new id every time for eg.
STRING
irb(main):019:0> "ruby".object_id
=> 24095860
irb(main):020:0> "ruby".object_id
=> 24092310
irb(main):021:0> "ruby".object_id
=> 24088760
irb(main):022:0>
SYMBOL
irb(main):022:0> :ruby.object_id
=> 102978
irb(main):023:0> :ruby.object_id
=> 102978
irb(main):024:0> :ruby.object_id
=> 102978
irb(main):025:0> :ruby.object_id
=> 102978
irb(main):026:0>
| Is This Answer Correct ? | 23 Yes | 2 No |
Answer / surekha matte
Rails makes extensive use of symbols. A symbol looks like a
variable symbols name, but it’s prefixed with a colon.
Examples of symbols include :action,:line_items, and :id.
Rails uses symbols to identify things. In particular, it
uses them as keys when naming method parameters and looking
things up in hashes. For example:
redirect_to :action => "edit", :id => params[:id]
| Is This Answer Correct ? | 17 Yes | 1 No |
What is a webrick web server?
what are the positive aspects of Rails?
Explain me what is the purpose of rjs in rails?
What is the use of super in Ruby Rails?
Is ruby on rails dying?
How to serialize data with yaml?
Write a program to show the functionality of request.xhr in ruby on rails ?
what is ORM (Object-Relationship-Model) in Rails?
List out the few features of Ruby?
Explain the importance of yield statement in rails.
How many types of variables are available in ruby class?
How would you create a controller for the subject?
ASP 
