pub struct NulError(_, _);
Expand description
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.
use std::ffi::{CString, NulError};
let _: NulError = CString::new(b"f\0oo".to_vec()).unwrap_err();
Run
Returns the position of the nul byte in the slice that caused
CString::new
to fail.
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
Consumes this error, returning the underlying vector of bytes which
generated the error in the first place.
use std::ffi::CString;
let nul_error = CString::new("foo\0bar").unwrap_err();
assert_eq!(nul_error.into_vec(), b"foo\0bar");
Run
Performs copy-assignment from source
. Read more
Formats the value using the given formatter. Read more
Formats the value using the given formatter. Read more
👎 Deprecated since 1.42.0:
use the Display impl or to_string()
The lower-level source of this error, if any. Read more
🔬 This is a nightly-only experimental API. (
backtrace
#53487)
Returns a stack backtrace, if available, of where this error occurred. Read more
👎 Deprecated since 1.33.0:
replaced by Error::source, which can support downcasting
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
This method tests for !=
.
impl<T> Any for T where
T: 'static + ?Sized,
Immutably borrows from an owned value. Read more
Mutably borrows from an owned value. Read more
impl<T, U> Into<U> for T where
U: From<T>,
The resulting type after obtaining ownership.
Creates owned data from borrowed data, usually by cloning. Read more
🔬 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
Converts the given value to a String
. Read more
The type returned in the event of a conversion error.
The type returned in the event of a conversion error.