Ruby - what's the difference between single and double quotes?
55502
Double vs single quotes
64037
Difference between ' and " on command line (bash)?
30170
Difference between _ and self. in Objective-C
28802
Is Ruby pass by reference or by value?
137026
What's the advantage of having multi-line & single-line string literals in python?
22334
What is Ruby's double-colon `::`?
94785
What are :+ and &:+ in Ruby?
46477
How to understand nil vs. empty vs. blank in Ruby
6276
Difference between \xx{} and \mathxx{}?
153286
When to use `self.foo` instead of `foo` in Ruby methods
23313
Difference between "and" and && in Ruby?
132155
How to understand symbols in Ruby
113601
What is the difference between .*? and .* regular expressions?
82617
character for single quote
126685
Single and double quotes together as HTML attribute value?
22272
Differences between doublequotes " ", singlequotes ' ' and backticks ` ` on commandline?
127376
What is the difference or value of these block coding styles in Ruby?