Struct SingletonEnv

pub struct SingletonEnv<EnvType> { /* private fields */ }

| Wraps an Env instance whose destructor | is never created. | | Intended usage: | | ———– | @code | | using PlatformSingletonEnv = SingletonEnv; | c_void ConfigurePosixEnv(int param) { | PlatformSingletonEnv::AssertEnvNotInitialized(); | // set global configuration flags. | } | Env* Env::Default() { | static PlatformSingletonEnv default_env; | return default_env.env(); | } |

Implementations

impl<EnvType> SingletonEnv<EnvType>

pub fn env(&mut self) -> Rc<RefCell<dyn Env>>

pub fn assert_env_not_initialized()

Trait Implementations

impl<EnvType> Default for SingletonEnv<EnvType>

fn default() -> Self

Returns the “default value” for a type.