Interested to Buy Any Domain ? << Click Here >> for more details...
Whats the difference between symbol and string?
- 2 Answers
- 10751 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 |
Why do we use request.xhr? in rails
Tell me what is orm (object-relationship-model) in rails?
Explain rails caching levels.
what is rake in Rails?
Who developed ruby on rails?
What is agile development? What are the strengths?
What is the flash?
What is a ruby singleton method ?
Do you know what is rake in rails?
How to use two databases into a single application?
Why RubyonRails?
Difference between argument and parameter in ruby on rails ?
ASP 
