Enum UnOp 

pub enum UnOp {
    Not,
    Neg,
    BitNot,
    Plus,
    PreInc,
    PreDec,
    PostInc,
    PostDec,
}

一元运算符。

Variants

Not

Neg

BitNot

Plus

一元 +（数值提升——char/byte/short 提升 int；装箱类型改变 Object o = +c → Integer 而非 Character）。恒等但静态类型敏感， 不可丢弃。

PreInc

++x（读+写）

PreDec

PostInc

x++（读+写）

PostDec

Implementations

impl UnOp

pub fn is_incdec(self) -> bool

Trait Implementations

impl Clone for UnOp

fn clone(&self) -> UnOp

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for UnOp

impl Debug for UnOp

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

Formats the value using the given formatter.

impl Eq for UnOp

impl Hash for UnOp

fn hash<__H>(&self, state: &mut __H)

where __H: Hasher,

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for UnOp

fn eq(&self, other: &UnOp) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for UnOp