What does the syntax ?. mean in this Ruby example?
59666
what is "?" in ruby
131658
What is ?: in PHP 5.3?
126379
What do square brackets, "[]", mean in function/class documentation?
21577
What does $ mean/do in Haskell?
120556
What does `` mean in Python?
50837
Array slicing in Ruby: explanation for illogical behaviour (taken from Rubykoans.com)
9173
What are the PHP operators "?" and ":" called and what do they do?
144166
What does the :: mean in C++?
153286
When to use `self.foo` instead of `foo` in Ruby methods
49518
What is the JavaScript >>> operator and how do you use it?
143637
What does ${ } mean in PHP syntax?
136392
What are the restrictions for method names in Ruby?
42134
Whats the difference between "${foo.bar}" and "#{foo.bar}"?
119575
How are parentheses interpreted at the command line?
27902
What is the purpose of the single underscore "_" variable in Python?
38402
What is the meaning of the ${0##...} syntax with variable, braces and hash character in bash?
126009
Why is `a = a` `nil` in Ruby?