Struct incrust::types::btype::BType

pub struct BType(pub Box<Type>);

Methods from Deref<Target=Box<Type>>

fn downcast<T>(self) -> Result<Box<T>, Box<Any + 'static>> where T: Any

Attempt to downcast the box to a concrete type.

Examples

use std::any::Any;

fn print_if_string(value: Box<Any>) {
    if let Ok(string) = value.downcast::<String>() {
        println!("String ({}): {}", string.len(), string);
    }
}

fn main() {
    let my_string = "Hello World".to_string();
    print_if_string(Box::new(my_string));
    print_if_string(Box::new(0i8));
}

fn downcast<T>(self) -> Result<Box<T>, Box<Any + 'static + Send>> where T: Any

Attempt to downcast the box to a concrete type.

Examples

use std::any::Any;

fn print_if_string(value: Box<Any + Send>) {
    if let Ok(string) = value.downcast::<String>() {
        println!("String ({}): {}", string.len(), string);
    }
}

fn main() {
    let my_string = "Hello World".to_string();
    print_if_string(Box::new(my_string));
    print_if_string(Box::new(0i8));
}

Trait Implementations

impl Debug for BType

fn fmt(&self, __arg_0: &mut Formatter) -> Result

Formats the value using the given formatter.

impl<T> From<T> for BType where T: Type + 'static

fn from(b: T) -> Self

Performs the conversion.

impl Deref for BType

type Target = Box<Type>

The resulting type after dereferencing

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

The method called to dereference a value

impl Clone for BType

fn clone(&self) -> Self

Returns a copy of the value.

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

Performs copy-assignment from source.