[−][src]Macro maybe_sync::dyn_maybe_send
Expands to dyn $traits
with Send
marker trait
added when "sync" feature is enabled.
Expands to dyn $traits
without Send
marker trait
added "sync" feature is not enabled.
Example
fn foo<T: MaybeSend>(_: T) {} // `x` will implement `MaybeSend` whether "sync" feature is enabled or not. let x: Box<dyn_maybe_send!(std::future::Future<Output = u32>)> = Box::new(async move { 42 }); foo(x);