Trait IsDefined

pub trait IsDefined {
    // Required method
    fn is_defined(&self) -> bool;
}

Indicate if a key is not zero. This trait must be implemented on keys used by the UpsertMut when a key is flagged as Identity (MS SQL). In such a case, the provider will check that property to determine if the entity must be inserted or updated.

Required Methods

fn is_defined(&self) -> bool

Implementations on Foreign Types

impl IsDefined for i8

fn is_defined(&self) -> bool

impl IsDefined for i16

fn is_defined(&self) -> bool

impl IsDefined for i32

fn is_defined(&self) -> bool

impl IsDefined for i64

fn is_defined(&self) -> bool

impl IsDefined for isize

fn is_defined(&self) -> bool

impl IsDefined for u8

fn is_defined(&self) -> bool

impl IsDefined for u16

fn is_defined(&self) -> bool

impl IsDefined for u32

fn is_defined(&self) -> bool

impl IsDefined for u64

fn is_defined(&self) -> bool

impl IsDefined for usize

fn is_defined(&self) -> bool

impl<T> IsDefined for Option<T>

where T: IsDefined,

fn is_defined(&self) -> bool

Implementors