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Struct ParseIntError 

pub struct ParseIntError { /* private fields */ }

An error which can be returned when parsing an integer.

For example, this error is returned by the from_str_radix() functions on the primitive integer types (such as i8::from_str_radix) and is used as the error type in their FromStr implementations.

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}");
}

Implementations

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impl ParseIntError
1.55.0 (const: 1.82.0)Source
pub const fn kind(&self) -> &IntErrorKind

Outputs the detailed cause of parsing an integer failing.

Trait Implementations

1.0.0Source
impl Clone for ParseIntError
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fn clone(&self) -> ParseIntError
Returns a duplicate of the value. Read more
1.0.0Source
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from source. Read more
1.0.0Source
impl Debug for ParseIntError
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fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>
Formats the value using the given formatter. Read more
1.0.0Source
impl Display for ParseIntError
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fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>
Formats the value using the given formatter. Read more
1.0.0Source
impl Error for ParseIntError
1.30.0Source
fn source(&self) -> Option<&(dyn Error + 'static)>
Returns the lower-level source of this error, if any. Read more
1.0.0Source
fn description(&self) -> &str
👎Deprecated since 1.42.0: use the Display impl or to_string()
Read more
1.0.0Source
fn cause(&self) -> Option<&dyn Error>
👎Deprecated since 1.33.0: replaced by Error::source, which can support downcasting
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fn provide<'a>(&'a self, request: &mut Request<'a>)
🔬This is a nightly-only experimental API. (error_generic_member_access #99301)
Provides type-based access to context intended for error reports. Read more
1.0.0Source
impl PartialEq for ParseIntError
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fn eq(&self, other: &ParseIntError) -> bool
Tests for self and other values to be equal, and is used by ==.
1.0.0Source
fn ne(&self, other: &Rhs) -> bool
Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
1.0.0Source
impl Eq for ParseIntError
1.0.0Source
impl StructuralPartialEq for ParseIntError

Auto Trait Implementations

impl Freeze for ParseIntError
impl RefUnwindSafe for ParseIntError
impl Send for ParseIntError
impl Sync for ParseIntError
impl Unpin for ParseIntError
impl UnwindSafe for ParseIntError

Blanket Implementations

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impl<T> Any for Twhere
    T: 'static + ?Sized,
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fn type_id(&self) -> TypeId
Gets the TypeId of self. Read more
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impl<T> Borrow<T> for Twhere
    T: ?Sized,
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fn borrow(&self) -> &T
Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for Twhere
    T: ?Sized,
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fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for Twhere
    T: Clone,
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unsafe fn clone_to_uninit(&self, dest: *mut u8)
🔬This is a nightly-only experimental API. (clone_to_uninit #126799)
Performs copy-assignment from self to dest. Read more
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impl<T> From<T> for T
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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for Twhere
    U: From<T>,
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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> ToOwned for Twhere
    T: Clone,
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type Owned = T
The resulting type after obtaining ownership.
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fn to_owned(&self) -> T
Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)
Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T> ToString for Twhere
    T: Display + ?Sized,
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fn to_string(&self) -> String
Converts the given value to a String. Read more
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impl<T, U> TryFrom<U> for Twhere
    U: Into<T>,
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type Error = Infallible
The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
Performs the conversion.
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impl<T, U> TryInto<U> for Twhere
    U: TryFrom<T>,
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type Error = <U as TryFrom<T>>::Error
The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>
Performs the conversion.

© 2010 The Rust Project Developers
Licensed under the Apache License, Version 2.0 or the MIT license, at your option.
https://doc.rust-lang.org/std/num/struct.ParseIntError.html