# 1.0.0[−][src]Struct core::num::ParseIntError

    pub struct ParseIntError { /* fields omitted */ }

An error which can be returned when parsing an integer.

This error is used as the error type for the `from_str_radix()` functions on the primitive integer types, such as `i8::from_str_radix`.

# Potential causes

Among other causes, `ParseIntError` can be thrown because of leading or trailing whitespace in the string e.g., when it is obtained from the standard input. Using the `str.trim()` method ensures that no whitespace remains before parsing.

# Example

    if let Err(e) = i32::from_str_radix("a12", 10) {
        println!("Failed conversion to i32: {}", e);
    }

Run

## Implementations

### `impl ParseIntError`[src]

#### `pub fn kind(&self) -> &IntErrorKind`[src]

🔬 This is a nightly-only experimental API. (`int_error_matching` #22639)

it can be useful to match errors when making error messages for integer parsing

Outputs the detailed cause of parsing an integer failing.

## Trait Implementations

### `impl Clone for ParseIntError`[src]

#### `pub fn clone(&self) -> ParseIntError`[src]

Returns a copy of the value. Read more

#### `pub fn clone_from(&mut self, source: &Self)`[src]

Performs copy-assignment from `source`. Read more

### `impl Debug for ParseIntError`[src]

#### `pub fn fmt(&self, f: &mut Formatter<'_>) -> Result`[src]

Formats the value using the given formatter. Read more

### `impl Display for ParseIntError`[src]

#### `pub fn fmt(&self, f: &mut Formatter<'_>) -> Result`[src]

Formats the value using the given formatter. Read more

### `impl Eq for ParseIntError`[src]

### `impl PartialEq<ParseIntError> for ParseIntError`[src]

#### `pub fn eq(&self, other: &ParseIntError) -> bool`[src]

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

#### `pub fn ne(&self, other: &ParseIntError) -> bool`[src]

This method tests for `!=`.

### `impl StructuralEq for ParseIntError`[src]

### `impl StructuralPartialEq for ParseIntError`[src]

## Auto Trait Implementations

### `impl Send for ParseIntError`

### `impl Sync for ParseIntError`

### `impl Unpin for ParseIntError`

## Blanket Implementations

### `impl<T> Any for T where
T: 'static + ?Sized,` [src]

#### `pub fn type_id(&Self) -> TypeId`[src]

Gets the `TypeId` of `self`. Read more

### `impl<T> Borrow<T> for T where
T: ?Sized,` [src]

#### `pub fn borrow(&Self) -> &T`[src]

Immutably borrows from an owned value. Read more

### `impl<T> BorrowMut<T> for T where
T: ?Sized,` [src]

#### `pub fn borrow_mut(&mut Self) -> &mut T`[src]

Mutably borrows from an owned value. Read more

### `impl<T> From<T> for T`[src]

#### `pub fn from(T) -> T`[src]

Performs the conversion.

### `impl<T, U> Into<U> for T where
U: From<T>,` [src]

#### `pub fn into(Self) -> U`[src]

Performs the conversion.

### `impl<T, U> TryFrom<U> for T where
U: Into<T>,` [src]

#### `type Error = Infallible`

The type returned in the event of a conversion error.

#### `pub fn try_from(U) -> Result<T, <T as TryFrom<U>>::Error>`[src]

Performs the conversion.

### `impl<T, U> TryInto<U> for T where
U: TryFrom<T>,` [src]

#### `type Error = <U as TryFrom<T>>::Error`

The type returned in the event of a conversion error.

#### `pub fn try_into(Self) -> Result<U, <U as TryFrom<T>>::Error>`[src]

Performs the conversion.