Difference between %{} and #{}

rubyonrails-talk
1

HI Experts,

i need to know the difference between %{} and #{}

waiting for the response

regards, Bala

2

first of all, i don't really think u'd be using %{} too much of the time (you might use some of the options available, like %q{} which is like single quotes, and %Q{} which is like double-quotes. basically:

%{} -> turns the stuff written into a string. #{} -> if inside double quotes, eval the code inside.

hope the following example helps out a bit more:

  shai@meshi:~/ruby$ cat str.rb

#!/usr/bin/ruby

one=1 two=2

puts "the variable 'one' used with \#{} is #{one}" puts "this is one with %{} in a string: %{one}" puts "this is one with %{} ruby (not within a string):" + %{one} puts ""; puts "notice something else though:"; puts "" puts "this is two with ruby and %q{}:" + %q{#{two}} puts "this is two with ruby and %Q{}:" + %Q{#{two}}

  shai@meshi:~/ruby$ ruby str.rb

the variable 'one' used with #{} is 1 this is one with %{} in a string: %{one} this is one with %{} ruby (not within a string):one

notice something else though:

this is two with ruby and %q{}:#{two} this is two with ruby and %Q{}:2

3

Thanks a log Shai. :slight_smile:

4

oops sorry that was lot. :slight_smile: