Simple APC utility class for use with Hack.
<?hh
$key = 'foo';
list($success, $value) = APC::get($key);
if (!$success) {
invariant(
APC::set($key, 'bar'),
'Failed to set `%s` in APC.',
$key,
);
list($success, $value) = APC::get('foo');
}
APC::delete('foo');