$foo ||= bar ^^^^^^^^^^^^
foo += bar ^^^^^^^^^^
foo &&= bar ^^^^^^^^^^^
foo ||= bar ^^^^^^^^^^^
@@foo += bar ^^^^^^^^^^^^
@@foo &&= bar ^^^^^^^^^^^^^
@@foo ||= bar ^^^^^^^^^^^^^
Foo::Bar += baz ^^^^^^^^^^^^^^^
Foo::Bar &&= baz ^^^^^^^^^^^^^^^^
Foo::Bar ||= baz ^^^^^^^^^^^^^^^^
$foo += bar ^^^^^^^^^^^
$foo &&= bar ^^^^^^^^^^^^
$foo ||= bar ^^^^^^^^^^^^
foo += bar ^^^^^^^^^^
foo &&= bar ^^^^^^^^^^^
foo ||= bar ^^^^^^^^^^^
Clear recorded tracing information.
Constant time memory comparison for fixed length strings, such as results of HMAC calculations.
Returns true if the strings are identical, false if they are of the same length but not identical. If the length is different, ArgumentError is raised.
Quietly ensure the Gem directory dir contains all the proper subdirectories for handling default gems. If we can’t create a directory due to a permission problem, then we will silently continue.
If mode is given, missing directories are created with this mode.
World-writable directories will never be created.
Find an unresolved Gem::Specification of default gem from path
Return the value that should be dumped for the command_line option.