fails:Binding#local_variable_defined? returns false when a variable is not defined
fails:Binding#local_variable_defined? returns true when a regular local variable is defined
fails:Binding#local_variable_defined? returns true when a local variable is defined using eval()
fails:Binding#local_variable_defined? returns true when a local variable is defined using Binding#local_variable_set
fails:Binding#local_variable_defined? returns true when a local variable is defined in a parent scope
fails:Binding#local_variable_defined? allows usage of a String as the variable name
fails:Binding#local_variable_defined? allows usage of an object responding to #to_str as the variable name
