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 !=
.
Immutably borrows from an owned value. Read more
Mutably borrows from an owned value. Read more
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.