570     pub struct Lazy<T, F = fn() -> T> {  struct
576     impl<T, F: RefUnwindSafe> RefUnwindSafe for Lazy<T, F> where OnceCell<T>: RefUnwindSafe {}  implementation
578     impl<T: fmt::Debug, F> fmt::Debug for Lazy<T, F> {  implementation
584     impl<T, F> Lazy<T, F> {  impl
599         pub const fn new(init: F) -> Lazy<T, F> {  in new()
600             Lazy { cell: OnceCell::new(), init: Cell::new(Some(init)) }  in new()
606         pub fn into_value(this: Lazy<T, F>) -> Result<T, F> {  in into_value()
615     impl<T, F: FnOnce() -> T> Lazy<T, F> {  implementation
630         pub fn force(this: &Lazy<T, F>) -> &T {  in force()
638     impl<T, F: FnOnce() -> T> Deref for Lazy<T, F> {  implementation
641             Lazy::force(self)  in deref()
645     impl<T, F: FnOnce() -> T> DerefMut for Lazy<T, F> {  implementation
647             Lazy::force(self);  in deref_mut()
652     impl<T: Default> Default for Lazy<T> {  implementation
654         fn default() -> Lazy<T> {  in default()
655             Lazy::new(T::default)  in default()
966     pub struct Lazy<T, F = fn() -> T> {  struct
971     impl<T: fmt::Debug, F> fmt::Debug for Lazy<T, F> {  implementation
982     unsafe impl<T, F: Send> Sync for Lazy<T, F> where OnceCell<T>: Sync {}  implementation
986     impl<T, F: RefUnwindSafe> RefUnwindSafe for Lazy<T, F> where OnceCell<T>: RefUnwindSafe {}  implementation
988     impl<T, F> Lazy<T, F> {  impl
991         pub const fn new(f: F) -> Lazy<T, F> {  in new()
992             Lazy { cell: OnceCell::new(), init: Cell::new(Some(f)) }  in new()
998         pub fn into_value(this: Lazy<T, F>) -> Result<T, F> {  in into_value()
1007     impl<T, F: FnOnce() -> T> Lazy<T, F> {  implementation
1021         pub fn force(this: &Lazy<T, F>) -> &T {  in force()
1029     impl<T, F: FnOnce() -> T> Deref for Lazy<T, F> {  implementation
1032             Lazy::force(self)  in deref()
1036     impl<T, F: FnOnce() -> T> DerefMut for Lazy<T, F> {  implementation
1038             Lazy::force(self);  in deref_mut()
1043     impl<T: Default> Default for Lazy<T> {  implementation
1045         fn default() -> Lazy<T> {  in default()
1046             Lazy::new(T::default)  in default()