Struct std::ffi::NulError1.0.0 [] [src]

pub struct NulError(_, _);

An error indicating that an interior nul byte was found.

While Rust strings may contain nul bytes in the middle, C strings can't, as that byte would effectively truncate the string.

This error is created by the new method on CString. See its documentation for more.

Examples

use std::ffi::{CString, NulError};

let _: NulError = CString::new(b"f\0oo".to_vec()).unwrap_err();Run

Methods

impl NulError
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Returns the position of the nul byte in the slice that caused CString::new to fail.

Examples

use std::ffi::CString;

let nul_error = CString::new("foo\0bar").unwrap_err();
assert_eq!(nul_error.nul_position(), 3);

let nul_error = CString::new("foo bar\0").unwrap_err();
assert_eq!(nul_error.nul_position(), 7);Run

Important traits for Vec<u8>
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Consumes this error, returning the underlying vector of bytes which generated the error in the first place.

Examples

use std::ffi::CString;

let nul_error = CString::new("foo\0bar").unwrap_err();
assert_eq!(nul_error.into_vec(), b"foo\0bar");Run

Trait Implementations

impl Clone for NulError
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Returns a copy of the value. Read more

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Performs copy-assignment from source. Read more

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

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This method tests for !=.

impl Eq for NulError
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impl Debug for NulError
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Formats the value using the given formatter. Read more

impl Error for NulError
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A short description of the error. Read more

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

impl Display for NulError
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Formats the value using the given formatter. Read more

impl From<NulError> for Error
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Performs the conversion.

Auto Trait Implementations

impl Send for NulError

impl Sync for NulError