Struct overflow_error::WouldOverflow

pub struct WouldOverflow;

Operation was not performed, as it would result in overflow or underflow.

Methods

impl WouldOverflow

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

Adds a payload to this error.

Examples

use overflow_error::*;

fn checked_add(a: u32, b: u32) -> Result<u32, WouldOverflowValue<u32>> {
    a.checked_add(b).ok_or(WouldOverflow.val(a))
}

assert_eq!(
    *checked_add(u32::max_value(), 1).unwrap_err().as_inner(),
    u32::max_value(),
);

impl WouldOverflow

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

String representing the error.

Examples

use overflow_error::WouldOverflow;
assert_eq!(
    WouldOverflow.as_str(),
    "operation was not performed, as it would overflow",
);

Trait Implementations

impl From<WouldOverflow> for CannotDiv

fn from(_: WouldOverflow) -> CannotDiv

Performs the conversion.

impl Copy for WouldOverflow

impl Clone for WouldOverflow

fn clone(&self) -> WouldOverflow

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for WouldOverflow

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

Formats the value using the given formatter.

impl PartialEq for WouldOverflow

fn eq(&self, __arg_0: &WouldOverflow) -> 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 WouldOverflow

impl Hash for WouldOverflow

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 Display for WouldOverflow

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

Formats the value using the given formatter.