ARGV question

[Joe Johnson]

I don't understand why since ARGV (the global command line argument
array) doesn't have the $ at the front as $ARGV since it's a global
variable? This looks inconsistent to me since Ruby requires all global
variables to begin with $. Can anyone please clarify this? TIA.

 

[gabriele renzi]

il Sun, 19 Oct 2003 08:29:07 -0700, Joe Johnson

I don't understand why since ARGV (the global command line argument
array) doesn't have the $ at the front as $ARGV since it's a global
variable? This looks inconsistent to me since Ruby requires all global
variables to begin with $. Can anyone please clarify this? TIA.

It is a constant, not a variable.

 

[Robert Klemme]

I don't understand why since ARGV (the global command line argument
array) doesn't have the $ at the front as $ARGV since it's a global
variable? This looks inconsistent to me since Ruby requires all global
variables to begin with $. Can anyone please clarify this? TIA.

I think, it's a constant in class Object and thus inherited by all objects.
Since you're always in the context of *some* instance you always can access
ARGV unqualified, i.e., use "ARGV" instead of "Object::ARGV".
?> Object::ARGV
=> []?> Foo.new.arg
=> "XXX"SyntaxError: compile error
(irb):24: syntax error
from (irb):24
Regards

robert