Struct CfgAttr 

pub struct CfgAttr<Cond, Attr>(pub Cond, pub Attr);

An attribute enabled conditionally, i.e. #[cfg_attr(Cond, Attr)]

Tuple Fields

0: Cond

1: Attr

Trait Implementations

impl<Cond: Clone, Attr: Clone> Clone for CfgAttr<Cond, Attr>

fn clone(&self) -> CfgAttr<Cond, Attr>

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<Cond: Debug, Attr: Debug> Debug for CfgAttr<Cond, Attr>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<O, Cond, Attr> Writable<O> for CfgAttr<Cond, Attr>

where O: Output, Cond: Writable<O>, Attr: Writable<O>,

async fn write_to(&self, output: &mut O) -> Result<(), O::Error>

Writes to the output. Returns the output’s error upon failure.