Function tch::no_grad_guard

pub fn no_grad_guard() -> NoGradGuard

Disables gradient tracking, this will be enabled back when the returned value gets deallocated. Note that it is important to bind this to a name like _guard and not to _ as the latter would immediately drop the guard. See https://internals.rust-lang.org/t/pre-rfc-must-bind/12658/46 for more details.