Trait FromColumn 

pub trait FromColumn: Sized {
    const EXPECTED: &'static str;

    // Required method
    fn read(row: &Row<'_>, index: usize) -> Result<Self, DbError>;
}

Required Associated Constants

const EXPECTED: &'static str

Required Methods

fn read(row: &Row<'_>, index: usize) -> Result<Self, DbError>

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementations on Foreign Types

impl FromColumn for f64

const EXPECTED: &'static str = "REAL"

fn read(row: &Row<'_>, index: usize) -> Result<Self, DbError>

impl FromColumn for i64

const EXPECTED: &'static str = "INTEGER"

fn read(row: &Row<'_>, index: usize) -> Result<Self, DbError>

impl FromColumn for String

const EXPECTED: &'static str = "TEXT"

fn read(row: &Row<'_>, index: usize) -> Result<Self, DbError>

impl FromColumn for Vec<u8>

const EXPECTED: &'static str = "BLOB"

fn read(row: &Row<'_>, index: usize) -> Result<Self, DbError>

impl<T: FromColumn> FromColumn for Option<T>

const EXPECTED: &'static str = T::EXPECTED

fn read(row: &Row<'_>, index: usize) -> Result<Self, DbError>

Implementors

impl FromColumn for TextLen

const EXPECTED: &'static str = "TEXT"