Struct NSURLRequestCachePolicy

#[repr(transparent)]
pub struct NSURLRequestCachePolicy(pub NSUInteger);

Available on crate feature NSURLRequest only.

The NSURLRequestCachePolicy enum defines constants that can be used to specify the type of interactions that take place with the caching system when the URL loading system processes a request. Specifically, these constants cover interactions that have to do with whether already-existing cache data is returned to satisfy a URL load request.

caching logic defined in the protocol implementation, if any, is used for a particular URL load request. This is the default policy for URL load requests.

data for the URL load should be loaded from the origin source. No existing local cache data, regardless of its freshness or validity, should be used to satisfy a URL load request.

not only should the local cache data be ignored, but that proxies and other intermediates should be instructed to disregard their caches so far as the protocol allows.

NSURLRequestReloadIgnoringLocalCacheData.

existing cache data should be used to satisfy a URL load request, regardless of its age or expiration date. However, if there is no existing data in the cache corresponding to a URL load request, the URL is loaded from the origin source.

existing cache data should be used to satisfy a URL load request, regardless of its age or expiration date. However, if there is no existing data in the cache corresponding to a URL load request, no attempt is made to load the URL from the origin source, and the load is considered to have failed. This constant specifies a behavior that is similar to an “offline” mode.

the existing cache data may be used provided the origin source confirms its validity, otherwise the URL is loaded from the origin source.

See also Apple’s documentation

Tuple Fields

0: NSUInteger

Implementations

impl NSURLRequestCachePolicy

pub const UseProtocolCachePolicy: Self

pub const ReloadIgnoringLocalCacheData: Self

pub const ReloadIgnoringLocalAndRemoteCacheData: Self

pub const ReloadIgnoringCacheData: Self

pub const ReturnCacheDataElseLoad: Self

pub const ReturnCacheDataDontLoad: Self

pub const ReloadRevalidatingCacheData: Self

Trait Implementations

impl Clone for NSURLRequestCachePolicy

fn clone(&self) -> NSURLRequestCachePolicy

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for NSURLRequestCachePolicy

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

Formats the value using the given formatter.

impl Encode for NSURLRequestCachePolicy

const ENCODING: Encoding = NSUInteger::ENCODING

The Objective-C type-encoding for this type.

impl Hash for NSURLRequestCachePolicy

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

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 Ord for NSURLRequestCachePolicy

fn cmp(&self, other: &NSURLRequestCachePolicy) -> 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.

impl PartialEq for NSURLRequestCachePolicy

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd for NSURLRequestCachePolicy

fn partial_cmp(&self, other: &NSURLRequestCachePolicy) -> 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 RefEncode for NSURLRequestCachePolicy

const ENCODING_REF: Encoding

The Objective-C type-encoding for a reference of this type.

impl Copy for NSURLRequestCachePolicy

impl Eq for NSURLRequestCachePolicy

impl StructuralPartialEq for NSURLRequestCachePolicy