std::num::ParseIntError - Rust
Description: API documentation for the Rust `ParseIntError` struct in crate `std`.
Keywords: rust, rustlang, rust-lang, ParseIntError

# 1.0.0[−][src]Struct std::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.

## 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]

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

Returns a copy of the value. Read more

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

Performs copy-assignment from `source`. Read more

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

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

Formats the value using the given formatter. Read more

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

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

Formats the value using the given formatter. Read more

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

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

#### `fn description(&self) -> &str`[src]

👎 Deprecated since 1.42.0:

use the Display impl or to_string()

`if let Err(e) = "xc".parse::<u32>() { // Print` e`itself, no need for description(). eprintln!("Error: {}", e); }` Read more

#### `fn source(&self) -> Option<&(dyn Error + 'static)>`1.30.0[src]

The lower-level source of this error, if any. Read more

#### `fn backtrace(&self) -> Option<&Backtrace>`[src]

🔬 This is a nightly-only experimental API. (`backtrace` #53487)

Returns a stack backtrace, if available, of where this error occurred. Read more

#### `fn cause(&self) -> Option<&dyn Error>`[src]

👎 Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

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

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

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

#### `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 RefUnwindSafe for ParseIntError`

### `impl Send for ParseIntError`

### `impl Sync for ParseIntError`

### `impl Unpin for ParseIntError`

### `impl UnwindSafe for ParseIntError`

## Blanket Implementations

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

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

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

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

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

Immutably borrows from an owned value. Read more

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

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

Mutably borrows from an owned value. Read more

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

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

Performs the conversion.

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

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

Performs the conversion.

### `impl<T> ToOwned for T where
T: Clone,` [src]

#### `type Owned = T`

The resulting type after obtaining ownership.

#### `fn to_owned(&self) -> T`[src]

Creates owned data from borrowed data, usually by cloning. Read more

#### `fn clone_into(&self, target: &mut T)`[src]

🔬 This is a nightly-only experimental API. (`toowned_clone_into` #41263)

recently added

Uses borrowed data to replace owned data, usually by cloning. Read more

### `impl<T> ToString for T where
T: Display + ?Sized,` [src]

#### `default fn to_string(&self) -> String`[src]

Converts the given value to a `String`. Read more

### `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.

#### `fn try_from(value: 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.

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

Performs the conversion.