Struct Modify 

pub struct Modify<T> { /* private fields */ }

Modifiable object Implements Deref and DerefMut to access the value and adds a flag to indicate if the object was modified.

Example

use crate::modify::*;
let mut value = Modify::new(42);
assert_eq!(value.is_modified(), false);
*value = 43;
assert_eq!(value.is_modified(), true);
value.saved();
assert_eq!(value.is_modified(), false);

if you use serde you should use #[serde(flatten)} for your Modify<> attribute to avoid the extra level of indirection.

Implementations

impl<T> Modify<T>

pub fn new(value: T) -> Self

Create a new modifiable object.

pub fn saved(&mut self)

Clear the modified flag.

Trait Implementations

impl<T: Debug> Debug for Modify<T>

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

Formats the value using the given formatter.

impl<T: Default> Default for Modify<T>

fn default() -> Modify<T>

Returns the “default value” for a type.

impl<T> Deref for Modify<T>

type Target = T

The resulting type after dereferencing.

fn deref(&self) -> &Self::Target

Dereferences the value.

impl<T> DerefMut for Modify<T>

fn deref_mut(&mut self) -> &mut Self::Target

Mutably dereferences the value.

impl<'de, T> Deserialize<'de> for Modify<T>

where T: Deserialize<'de>,

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl<T> Display for Modify<T>

where T: Display,

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

Formats the value using the given formatter.

impl<T> From<T> for Modify<T>

fn from(value: T) -> Self

Converts to this type from the input type.

impl<T> Modifiable for Modify<T>

fn is_modified(&self) -> bool

Return true if the object was modified.

impl<T: PartialEq> PartialEq for Modify<T>

fn eq(&self, other: &Modify<T>) -> 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<T> Serialize for Modify<T>

where T: Serialize,

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl<T> StructuralPartialEq for Modify<T>