Enum Effect 

pub enum Effect {
    Nothing,
    Reads,
    Writes,
}

What a function does to one part of memory.

Ordered weakest first, so that adding up what a body does is a maximum and narrowing what was promised against what was worked out is a minimum. There is no fourth value for writing without reading: a summary that claimed it would have to be believed by a load as well as by a store, and nothing at this granularity has earned that.

Variants

Nothing

Never touched.

Reads

Read and not written.

Writes

Written, and read as far as anything here can tell.

Implementations

impl Effect

pub fn and_then(self, other: Self) -> Self

Both of these happened.

pub fn as_well_as(self, other: Self) -> Self

Both of these are true of the same function, so the tighter one is.

pub fn reads(self) -> bool

Whether the bytes can have been read.

pub fn writes(self) -> bool

Whether the bytes can have been written.

pub fn name(self) -> &'static str

What this reads as in a remark.

Trait Implementations

impl Clone for Effect

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Effect

impl Debug for Effect

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

Formats the value using the given formatter.

impl Default for Effect

fn default() -> Self

Returns the “default value” for a type.

impl Eq for Effect

impl Ord for Effect

fn cmp(&self, other: &Self) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

fn clamp_to<R>(self, range: R) -> Self

where Self: Sized, R: ClampBounds<Self>,

🔬This is a nightly-only experimental API. (clamp_to)

Restrict a value to a certain range.

impl PartialEq for Effect

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

Equality operator ==.

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

Inequality operator !=.

impl PartialOrd for Effect

fn partial_cmp(&self, other: &Self) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl StructuralPartialEq for Effect