@foo = 1 ^^^^^^^^
foo = 1 ^^^^^^^
@@foo &&= bar
becomes
@@foo && @@foo = bar
@@foo ||= bar
becomes
defined?(@@foo) ? @@foo : @@foo = bar
$foo ||= bar
becomes
defined?($foo) ? $foo : $foo = bar
@foo &&= bar
becomes
@foo && @foo = bar
@foo ||= bar
becomes
@foo || @foo = bar
alias $foo $bar ^^^^^^^^^^^^^^^
foo { |; bar| } ^^^
@@foo = 1 ^^^^^^^^^
Foo &&= bar ^^^^^^^^^^^^
Foo ||= bar ^^^^^^^^^^^^
$foo = 1 ^^^^^^^^
@foo = 1 ^^^^^^^^