Enum overflow_error::CannotDiv

pub enum CannotDiv {
    ByZero,
    WouldOverflow,
}

Division could not be performed; either [DivByZero] or [WouldOverflow].

Variants

ByZero

[DivByZero]

WouldOverflow

[WouldOverflow]

Methods

impl CannotDiv

pub fn val<T>(self, val: T) -> CannotDivValue<T>

Adds a payload to this error, representing the left-hand-side of the division.

Examples

use overflow_error::*;

fn checked_div(a: u32, b: u32) -> Result<u32, CannotDivValue<u32>>
{
    if b == 0 {
        Err(CannotDiv::ByZero.val(a))
    } else {
        a.checked_div(b).ok_or(CannotDiv::WouldOverflow.val(a))
    }
}

let result = checked_div(1, 0);
assert!(*result.unwrap_err().as_inner() == 1);

pub fn as_str(&self) -> &'static str

String representing the error.

Examples

use overflow_error::*;
assert!(CannotDiv::ByZero.as_str() == DivByZero.as_str());
assert!(CannotDiv::WouldOverflow.as_str() == WouldOverflow.as_str());

Trait Implementations

impl Copy for CannotDiv

impl Clone for CannotDiv

fn clone(&self) -> CannotDiv

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for CannotDiv

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

Formats the value using the given formatter.

impl PartialEq for CannotDiv

fn eq(&self, __arg_0: &CannotDiv) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=.

impl Eq for CannotDiv

impl Hash for CannotDiv

fn hash<__H: Hasher>(&self, __arg_0: &mut __H)

Feeds this value into the given [Hasher].

fn hash_slice<H>(data: &[Self], state: &mut H) where
    H: Hasher, 

Feeds a slice of this type into the given [Hasher].

impl From<DivByZero> for CannotDiv

fn from(_: DivByZero) -> CannotDiv

Performs the conversion.

impl From<WouldOverflow> for CannotDiv

fn from(_: WouldOverflow) -> CannotDiv

Performs the conversion.

impl Display for CannotDiv

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

Formats the value using the given formatter.