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.
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
Deprecating in 1.33.0
: replaced by Error::source, which can support downcasting
The lower-level cause of this error, if any. Read more
The lower-level source of this error, if any. Read more
Formats the value using the given formatter. Read more
Formats the value using the given formatter. Read more
This method tests for self
and other
values to be equal, and is used by ==
. Read more
This method tests for !=
.
Performs copy-assignment from source
. Read more
🔬 This is a nightly-only experimental API. (
try_from
#33417)
The type returned in the event of a conversion error.
🔬 This is a nightly-only experimental API. (
try_from
#33417)
🔬 This is a nightly-only experimental API. (
try_from
#33417)
The type returned in the event of a conversion error.
🔬 This is a nightly-only experimental API. (
try_from
#33417)
Immutably borrows from an owned value. Read more
Mutably borrows from an owned value. Read more
🔬 This is a nightly-only experimental API. (get_type_id
#27745)
this method will likely be replaced by an associated static
type Owned = T
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