Ruby Variable Scope
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Revision as of 18:37, 15 November 2007 by Neil (Talk | contribs) (New page: Now that we have covered the basics of variables in Ruby the next task is to explain Ruby variable scope. == What is Variable Scope? == Scope defines where in a program a variable is acc...)
Now that we have covered the basics of variables in Ruby the next task is to explain Ruby variable scope.
What is Variable Scope?
Scope defines where in a program a variable is accessible. Ruby has four types of variable scope, local, global, instance and class'. Each variable type is declared by using a special character at the start of the variable name as outlined in the following table.
$ | a global variable |
@ | An instance variable |
[a-z] or _ | A local variable |
[A-Z] | A constant |
