Trait FromCard 

pub trait FromCard: Sized {
    // Required method
    fn from_card(record: &Record) -> Option<Self>;
}

Convert a record’s value into a Rust type. The extension point behind Header::get.

Required Methods

fn from_card(record: &Record) -> Option<Self>

Extract Self from a record, or None if absent/unparseable.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementations on Foreign Types

impl FromCard for PrimitiveDateTime

fn from_card(record: &Record) -> Option<Self>

impl FromCard for String

fn from_card(record: &Record) -> Option<Self>

impl FromCard for bool

fn from_card(record: &Record) -> Option<Self>

impl FromCard for f32

fn from_card(record: &Record) -> Option<Self>

impl FromCard for f64

fn from_card(record: &Record) -> Option<Self>

impl FromCard for i8

fn from_card(record: &Record) -> Option<Self>

impl FromCard for i16

fn from_card(record: &Record) -> Option<Self>

impl FromCard for i32

fn from_card(record: &Record) -> Option<Self>

impl FromCard for i64

fn from_card(record: &Record) -> Option<Self>

impl FromCard for u8

fn from_card(record: &Record) -> Option<Self>

impl FromCard for u16

fn from_card(record: &Record) -> Option<Self>

impl FromCard for u32

fn from_card(record: &Record) -> Option<Self>

impl FromCard for u64

fn from_card(record: &Record) -> Option<Self>

Implementors