Enum ecmascript::ast::UnaryOperator

pub enum UnaryOperator {
    Minus,
    Plus,
    Not,
    BitwiseNot,
    Typeof,
    Void,
    Delete,
}

These operators take 1 operand, and are a prefix of the operand. Reference

Variants

Minus

Reverse the sign on the operand. This will do type coercion first. eg. (-1)

Plus

Make the operand a positive number. This will do type coercion first. eg (+(-1) is 1)

Not

Logically reverse the operand. This will do type coercion first. eg. (!true is false)

BitwiseNot

Logcally reverse all the bits on the operand. This will do type coercion first. eg (~9 is -10) (the sign bit is also reversed)

Typeof

Check the internal type of the operand, and return a string that represents the type. eg (typeof {}) is 'object'

Void

This operator will evaluate the operand, and then return undefined itself. This can be used for invoke a function epxression immediately for example.

Delete

This operator will remove a property from an object. It will return true when the property was successfully deleted, and false when it wasnt.

Trait Implementations

impl Debug for UnaryOperator

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

Formats the value using the given formatter.

impl Clone for UnaryOperator

fn clone(&self) -> UnaryOperator

Returns a copy of the value.

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

Performs copy-assignment from source.

impl PartialEq for UnaryOperator

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

This method tests for self and other values to be equal, and is used by ==.

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

This method tests for !=.