Struct widestring::ustr::UStr

pub struct UStr<C: UChar> { /* fields omitted */ }

String slice reference for UString.

UStr is to UString as str is to String.

UStr is not aware of nul values. Strings may or may not be nul-terminated, and may contain invalid and ill-formed UTF-16 or UTF-32 data. These strings are intended to be used with FFI functions that directly use string length, where the strings are known to have proper nul-termination already, or where strings are merely being passed through without modification.

UCStr should be used instead if nul-aware strings are required.

UStr can be converted to many other string types, including OsString and String, making proper Unicode FFI safe and easy.

Please prefer using the type aliases U16Str, U32Str or WideStr to using this type directly.

Implementations

impl<C: UChar> UStr<C>

pub fn new<S: AsRef<Self> + ?Sized>(s: &S) -> &Self

Coerces a value into a UStr.

pub unsafe fn from_ptr<'a>(p: *const C, len: usize) -> &'a Self

Constructs a UStr from a pointer and a length.

The len argument is the number of elements, not the number of bytes. No copying or allocation is performed, the resulting value is a direct reference to the pointer bytes.

Safety

This function is unsafe as there is no guarantee that the given pointer is valid for len elements.

In addition, the data must meet the safety conditions of std::slice::from_raw_parts. In particular, the returned string reference must not be mutated for the duration of lifetime 'a, except inside an UnsafeCell.

Panics

This function panics if p is null.

Caveat

The lifetime for the returned string is inferred from its usage. To prevent accidental misuse, it’s suggested to tie the lifetime to whichever source lifetime is safe in the context, such as by providing a helper function taking the lifetime of a host value for the string, or by explicit annotation.

pub unsafe fn from_ptr_mut<'a>(p: *mut C, len: usize) -> &'a mut Self

Constructs a mutable UStr from a mutable pointer and a length.

The len argument is the number of elements, not the number of bytes. No copying or allocation is performed, the resulting value is a direct reference to the pointer bytes.

Safety

This function is unsafe as there is no guarantee that the given pointer is valid for len elements.

In addition, the data must meet the safety conditions of std::slice::from_raw_parts_mut.

Panics

This function panics if p is null.

Caveat

The lifetime for the returned string is inferred from its usage. To prevent accidental misuse, it’s suggested to tie the lifetime to whichever source lifetime is safe in the context, such as by providing a helper function taking the lifetime of a host value for the string, or by explicit annotation.

pub fn from_slice(slice: &[C]) -> &Self

Constructs a UStr from a slice of character data.

No checks are performed on the slice. It may or may not be valid for its encoding.

pub fn from_slice_mut(slice: &mut [C]) -> &mut Self

Constructs a mutable UStr from a mutable slice of character data.

No checks are performed on the slice. It may or may not be valid for its encoding.

pub fn to_ustring(&self) -> UString<C>

Copies the string reference to a new owned UString.

pub fn as_slice(&self) -> &[C]

Converts to a slice of the string.

pub fn as_mut_slice(&mut self) -> &mut [C]

Converts to a mutable slice of the string.

pub fn as_ptr(&self) -> *const C

Returns a raw pointer to the string.

The caller must ensure that the string outlives the pointer this function returns, or else it will end up pointing to garbage.

The caller must also ensure that the memory the pointer (non-transitively) points to is never written to (except inside an UnsafeCell) using this pointer or any pointer derived from it. If you need to mutate the contents of the string, use as_mut_ptr.

Modifying the container referenced by this string may cause its buffer to be reallocated, which would also make any pointers to it invalid.

pub fn as_mut_ptr(&mut self) -> *mut C

Returns an unsafe mutable raw pointer to the string.

The caller must ensure that the string outlives the pointer this function returns, or else it will end up pointing to garbage.

Modifying the container referenced by this string may cause its buffer to be reallocated, which would also make any pointers to it invalid.

pub fn as_ptr_range(&self) -> Range<*const C>

Returns the two raw pointers spanning the string slice.

The returned range is half-open, which means that the end pointer points one past the last element of the slice. This way, an empty slice is represented by two equal pointers, and the difference between the two pointers represents the size of the slice.

See as_ptr for warnings on using these pointers. The end pointer requires extra caution, as it does not point to a valid element in the slice.

This function is useful for interacting with foreign interfaces which use two pointers to refer to a range of elements in memory, as is common in C++.

pub fn as_mut_ptr_range(&mut self) -> Range<*mut C>

Returns the two unsafe mutable pointers spanning the string slice.

The returned range is half-open, which means that the end pointer points one past the last element of the slice. This way, an empty slice is represented by two equal pointers, and the difference between the two pointers represents the size of the slice.

See as_mut_ptr for warnings on using these pointers. The end pointer requires extra caution, as it does not point to a valid element in the slice.

This function is useful for interacting with foreign interfaces which use two pointers to refer to a range of elements in memory, as is common in C++.

pub fn len(&self) -> usize

Returns the length of the string as number of elements (not number of bytes).

pub fn is_empty(&self) -> bool

Returns whether this string contains no data.

pub fn into_ustring(self: Box<Self>) -> UString<C>

Converts a Box<UStr> into a UString without copying or allocating.

pub fn display(&self) -> Display<'_, C>

Returns an object that implements Display for printing strings that may contain non-Unicode data.

A UStr might contain ill-formed UTF encoding. This struct implements the Display trait in a way that decoding the string is lossy but no heap allocations are performed, such as by to_string_lossy.

By default, invalid Unicode data is replaced with U+FFFD REPLACEMENT CHARACTER (�). If you wish to simply skip any invalid Uncode data and forego the replacement, you may use the alternate formatting with {:#}.

Examples

Basic usage:

use widestring::U16Str;

// 𝄞mus<invalid>ic<invalid>
let s = U16Str::from_slice(&[
    0xD834, 0xDD1E, 0x006d, 0x0075, 0x0073, 0xDD1E, 0x0069, 0x0063, 0xD834,
]);

assert_eq!(format!("{}", s.display()),
"𝄞mus�ic�"
);

Using alternate formatting style to skip invalid values entirely:

use widestring::U16Str;

// 𝄞mus<invalid>ic<invalid>
let s = U16Str::from_slice(&[
    0xD834, 0xDD1E, 0x006d, 0x0075, 0x0073, 0xDD1E, 0x0069, 0x0063, 0xD834,
]);

assert_eq!(format!("{:#}", s.display()),
"𝄞music"
);

pub fn get<I>(&self, i: I) -> Option<&Self> where
    I: SliceIndex<[C], Output = [C]>, 

Returns a subslice of the string.

This is the non-panicking alternative to indexing the string. Returns None whenever equivalent indexing operation would panic.

pub fn get_mut<I>(&mut self, i: I) -> Option<&mut Self> where
    I: SliceIndex<[C], Output = [C]>, 

Returns a mutable subslice of the string.

This is the non-panicking alternative to indexing the string. Returns None whenever equivalent indexing operation would panic.

pub unsafe fn get_unchecked<I>(&self, i: I) -> &Self where
    I: SliceIndex<[C], Output = [C]>, 

Returns an unchecked subslice of the string.

This is the unchecked alternative to indexing the string.

Safety

Callers of this function are responsible that these preconditions are satisfied:

• The starting index must not exceed the ending index;
• Indexes must be within bounds of the original slice.

Failing that, the returned string slice may reference invalid memory.

pub unsafe fn get_unchecked_mut<I>(&mut self, i: I) -> &mut Self where
    I: SliceIndex<[C], Output = [C]>, 

Returns aa mutable, unchecked subslice of the string.

This is the unchecked alternative to indexing the string.

Safety

Callers of this function are responsible that these preconditions are satisfied:

• The starting index must not exceed the ending index;
• Indexes must be within bounds of the original slice.

Failing that, the returned string slice may reference invalid memory.

pub fn split_at(&self, mid: usize) -> (&Self, &Self)

Divide one string slice into two at an index.

The argument, mid, should be an offset from the start of the string.

The two slices returned go from the start of the string slice to mid, and from mid to the end of the string slice.

To get mutable string slices instead, see the split_at_mut method.

pub fn split_at_mut(&mut self, mid: usize) -> (&mut Self, &mut Self)

Divide one mutable string slice into two at an index.

The argument, mid, should be an offset from the start of the string.

The two slices returned go from the start of the string slice to mid, and from mid to the end of the string slice.

To get immutable string slices instead, see the split_at method.

impl UStr<u16>

pub fn to_os_string(&self) -> OsString

Decodes a string reference to an owned OsString.

This makes a string copy of the U16Str. Since U16Str makes no guarantees that it is valid UTF-16, there is no guarantee that the resulting OsString will be valid encoding either.

Note that the encoding of OsString is platform-dependent, so on some platforms this may make an encoding conversions, while on other platforms (such as windows) no changes to the string will be made.

Examples

use widestring::U16String;
use std::ffi::OsString;
let s = "MyString";
// Create a wide string from the string
let wstr = U16String::from_str(s);
// Create an OsString from the wide string
let osstr = wstr.to_os_string();

assert_eq!(osstr, OsString::from(s));

pub fn to_string(&self) -> Result<String, FromUtf16Error>

Decodes the string reference to a String if it contains valid UTF-16 data.

Failures

Returns an error if the string contains any invalid UTF-16 data.

Examples

use widestring::U16String;
let s = "MyString";
// Create a wide string from the string
let wstr = U16String::from_str(s);
// Create a regular string from the wide string
let s2 = wstr.to_string().unwrap();

assert_eq!(s2, s);

pub fn to_string_lossy(&self) -> String

Decodes the string reference to a String even if it is invalid UTF-16 data.

Any non-Unicode sequences are replaced with U+FFFD REPLACEMENT CHARACTER.

Examples

use widestring::U16String;
let s = "MyString";
// Create a wide string from the string
let wstr = U16String::from_str(s);
// Create a regular string from the wide string
let lossy = wstr.to_string_lossy();

assert_eq!(lossy, s);

pub fn chars(&self) -> Utf16Chars<'_>

Returns an iterator over the chars of a string slice.

As this string slice may consist of invalid UTF-16, the iterator returned by this method is an iterator over Result<char, DecodeUtf16Error> instead of chars directly. If you would like a lossy iterator over charss directly, instead use chars_lossy.

It’s important to remember that char represents a Unicode Scalar Value, and may not match your idea of what a ‘character’ is. Iteration over grapheme clusters may be what you actually want. That functionality is not provided by by this crate.

pub fn chars_lossy(&self) -> CharsLossy<'_>

Returns a lossy iterator over the chars of a string slice.

As this string slice may consist of invalid UTF-16, the iterator returned by this method will replace unpaired surrogates with U+FFFD REPLACEMENT CHARACTER (�). This is a lossy version of chars.

It’s important to remember that char represents a Unicode Scalar Value, and may not match your idea of what a ‘character’ is. Iteration over grapheme clusters may be what you actually want. That functionality is not provided by by this crate.

pub fn char_indices(&self) -> Utf16CharIndices<'_>

Returns an iterator over the chars of a string slice, and their positions.

As this string slice may consist of invalid UTF-16, the iterator returned by this method is an iterator over Result<char, DecodeUtf16Error> as well as their positions, instead of chars directly. If you would like a lossy indices iterator over charss directly, instead use char_indices_lossy.

The iterator yields tuples. The position is first, the char is second.

pub fn char_indices_lossy(&self) -> Utf16CharIndicesLossy<'_>

Returns a lossy iterator over the chars of a string slice, and their positions.

As this string slice may consist of invalid UTF-16, the iterator returned by this method will replace unpaired surrogates with U+FFFD REPLACEMENT CHARACTER (�), as well as the positions of all characters. This is a lossy version of char_indices.

The iterator yields tuples. The position is first, the char is second.

impl UStr<u32>

pub unsafe fn from_char_ptr<'a>(p: *const char, len: usize) -> &'a Self

Constructs a U32Str from a char pointer and a length.

The len argument is the number of char elements, not the number of bytes. No copying or allocation is performed, the resulting value is a direct reference to the pointer bytes.

Safety

This function is unsafe as there is no guarantee that the given pointer is valid for len elements.

In addition, the data must meet the safety conditions of std::slice::from_raw_parts. In particular, the returned string reference must not be mutated for the duration of lifetime 'a, except inside an UnsafeCell.

Panics

This function panics if p is null.

Caveat

The lifetime for the returned string is inferred from its usage. To prevent accidental misuse, it’s suggested to tie the lifetime to whichever source lifetime is safe in the context, such as by providing a helper function taking the lifetime of a host value for the string, or by explicit annotation.

pub unsafe fn from_char_ptr_mut<'a>(p: *mut char, len: usize) -> &'a mut Self

Constructs a mutable U32Str from a mutable char pointer and a length.

The len argument is the number of char elements, not the number of bytes. No copying or allocation is performed, the resulting value is a direct reference to the pointer bytes.

Safety

This function is unsafe as there is no guarantee that the given pointer is valid for len elements.

In addition, the data must meet the safety conditions of std::slice::from_raw_parts_mut.

Panics

This function panics if p is null.

Caveat

The lifetime for the returned string is inferred from its usage. To prevent accidental misuse, it’s suggested to tie the lifetime to whichever source lifetime is safe in the context, such as by providing a helper function taking the lifetime of a host value for the string, or by explicit annotation.

pub fn from_char_slice(slice: &[char]) -> &Self

Constructs a U32Str from a char slice.

No checks are performed on the slice.

pub fn from_char_slice_mut(slice: &mut [char]) -> &mut Self

Constructs a mutable U32Str from a mutable char slice.

No checks are performed on the slice.

pub fn to_os_string(&self) -> OsString

Decodes a string to an owned OsString.

This makes a string copy of the U32Str. Since U32Str makes no guarantees that it is valid UTF-32, there is no guarantee that the resulting OsString will be valid data.

Note that the encoding of OsString is platform-dependent, so on some platforms this may make an encoding conversions, while on other platforms no changes to the string will be made.

Examples

use widestring::U32String;
use std::ffi::OsString;
let s = "MyString";
// Create a wide string from the string
let wstr = U32String::from_str(s);
// Create an OsString from the wide string
let osstr = wstr.to_os_string();

assert_eq!(osstr, OsString::from(s));

pub fn to_string(&self) -> Result<String, FromUtf32Error>

Decodes the string to a String if it contains valid UTF-32 data.

Failures

Returns an error if the string contains any invalid UTF-32 data.

Examples

use widestring::U32String;
let s = "MyString";
// Create a wide string from the string
let wstr = U32String::from_str(s);
// Create a regular string from the wide string
let s2 = wstr.to_string().unwrap();

assert_eq!(s2, s);

pub fn to_string_lossy(&self) -> String

Decodes the string reference to a String even if it is invalid UTF-32 data.

Any non-Unicode sequences are replaced with U+FFFD REPLACEMENT CHARACTER.

Examples

use widestring::U32String;
let s = "MyString";
// Create a wide string from the string
let wstr = U32String::from_str(s);
// Create a regular string from the wide string
let lossy = wstr.to_string_lossy();

assert_eq!(lossy, s);

pub fn chars(&self) -> Utf32Chars<'_>

Returns an iterator over the chars of a string slice.

As this string slice may consist of invalid UTF-32, the iterator returned by this method is an iterator over Result<char, DecodeUtf32Error> instead of chars directly. If you would like a lossy iterator over charss directly, instead use chars_lossy.

It’s important to remember that char represents a Unicode Scalar Value, and may not match your idea of what a ‘character’ is. Iteration over grapheme clusters may be what you actually want. That functionality is not provided by by this crate.

pub fn chars_lossy(&self) -> CharsLossy<'_>

Returns a lossy iterator over the chars of a string slice.

As this string slice may consist of invalid UTF-32, the iterator returned by this method will replace surrogate values or invalid code points with U+FFFD REPLACEMENT CHARACTER (�). This is a lossy version of chars.

It’s important to remember that char represents a Unicode Scalar Value, and may not match your idea of what a ‘character’ is. Iteration over grapheme clusters may be what you actually want. That functionality is not provided by by this crate.

Trait Implementations

impl<C: UChar> Add<&'_ UStr<C>> for UString<C>

type Output = UString<C>

The resulting type after applying the + operator.

fn add(self, rhs: &UStr<C>) -> Self::Output

Performs the + operation.

impl<C: UChar> AddAssign<&'_ UStr<C>> for UString<C>

fn add_assign(&mut self, rhs: &UStr<C>)

Performs the += operation.

impl<C: UChar> AsMut<[C]> for UStr<C>

fn as_mut(&mut self) -> &mut [C]

Performs the conversion.

impl<C: UChar> AsMut<UStr<C>> for UStr<C>

fn as_mut(&mut self) -> &mut UStr<C>

Performs the conversion.

impl<C: UChar> AsMut<UStr<C>> for UString<C>

fn as_mut(&mut self) -> &mut UStr<C>

Performs the conversion.

impl<C: UChar> AsRef<[C]> for UStr<C>

fn as_ref(&self) -> &[C]

Performs the conversion.

impl<C: UChar> AsRef<UStr<C>> for UCStr<C>

fn as_ref(&self) -> &UStr<C>

Performs the conversion.

impl<C: UChar> AsRef<UStr<C>> for UCString<C>

fn as_ref(&self) -> &UStr<C>

Performs the conversion.

impl<C: UChar> AsRef<UStr<C>> for UStr<C>

fn as_ref(&self) -> &Self

Performs the conversion.

impl<C: UChar> AsRef<UStr<C>> for UString<C>

fn as_ref(&self) -> &UStr<C>

Performs the conversion.

impl<C: UChar> Borrow<UStr<C>> for UString<C>

fn borrow(&self) -> &UStr<C>

Immutably borrows from an owned value.

impl<C: UChar> BorrowMut<UStr<C>> for UString<C>

fn borrow_mut(&mut self) -> &mut UStr<C>

Mutably borrows from an owned value.

impl<C: UChar> Default for &UStr<C>

fn default() -> Self

Returns the “default value” for a type.

impl<C: UChar> Default for &mut UStr<C>

fn default() -> Self

Returns the “default value” for a type.

impl<'a, C: UChar> Extend<&'a UStr<C>> for UString<C>

fn extend<T: IntoIterator<Item = &'a UStr<C>>>(&mut self, iter: T)

Extends a collection with the contents of an iterator.

fn extend_one(&mut self, item: A)

🔬 This is a nightly-only experimental API. (extend_one)

Extends a collection with exactly one element.

fn extend_reserve(&mut self, additional: usize)

🔬 This is a nightly-only experimental API. (extend_one)

Reserves capacity in a collection for the given number of additional elements.

impl<'a, C: UChar> From<&'a [C]> for &'a UStr<C>

fn from(value: &'a [C]) -> Self

Performs the conversion.

impl<'a, C: UChar> From<&'a UStr<C>> for Box<UStr<C>>

fn from(s: &'a UStr<C>) -> Self

Performs the conversion.

impl<'a> From<&'a UStr<u16>> for Cow<'a, UStr<u16>>

fn from(s: &'a UStr<u16>) -> Self

Performs the conversion.

impl<'a> From<&'a UStr<u32>> for Cow<'a, UStr<u32>>

fn from(s: &'a UStr<u32>) -> Self

Performs the conversion.

impl<'a, C: UChar> From<&'a mut [C]> for &'a UStr<C>

fn from(value: &'a mut [C]) -> Self

Performs the conversion.

impl<'a, C: UChar> From<&'a mut [C]> for &'a mut UStr<C>

fn from(value: &'a mut [C]) -> Self

Performs the conversion.

impl<'a, C: UChar + 'a> FromIterator<&'a UStr<C>> for UString<C>

fn from_iter<T: IntoIterator<Item = &'a UStr<C>>>(iter: T) -> Self

Creates a value from an iterator.

impl<C: Hash + UChar> Hash for UStr<C>

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H) where
    H: Hasher, 

Feeds a slice of this type into the given Hasher.

impl<C: UChar, I> Index<I> for UStr<C> where
    I: SliceIndex<[C], Output = [C]>, 

type Output = Self

The returned type after indexing.

fn index(&self, index: I) -> &Self::Output

Performs the indexing (container[index]) operation.

impl<C: UChar, I> IndexMut<I> for UStr<C> where
    I: SliceIndex<[C], Output = [C]>, 

fn index_mut(&mut self, index: I) -> &mut Self::Output

Performs the mutable indexing (container[index]) operation.

impl<C: Ord + UChar> Ord for UStr<C>

fn cmp(&self, other: &UStr<C>) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

Restrict a value to a certain interval.

impl<'a, C: UChar> PartialEq<&'a UStr<C>> for UCString<C>

fn eq(&self, other: &&'a UStr<C>) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=.

impl<'a, C: UChar> PartialEq<&'a UStr<C>> for UString<C>

fn eq(&self, other: &&'a UStr<C>) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=.

impl<C: UChar> PartialEq<UCStr<C>> for UStr<C>

fn eq(&self, other: &UCStr<C>) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=.

impl<C: UChar> PartialEq<UStr<C>> for UCStr<C>

fn eq(&self, other: &UStr<C>) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=.

impl<C: UChar> PartialEq<UStr<C>> for UCString<C>

fn eq(&self, other: &UStr<C>) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=.

impl<C: PartialEq + UChar> PartialEq<UStr<C>> for UStr<C>

fn eq(&self, other: &UStr<C>) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &UStr<C>) -> bool

This method tests for !=.

impl<C: UChar> PartialEq<UStr<C>> for UString<C>

fn eq(&self, other: &UStr<C>) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=.

impl<'a, C: UChar> PartialOrd<&'a UStr<C>> for UCString<C>

fn partial_cmp(&self, other: &&'a UStr<C>) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

This method tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

This method tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

This method tests greater than or equal to (for self and other) and is used by the >= operator.

impl<'a, C: UChar> PartialOrd<&'a UStr<C>> for UString<C>

fn partial_cmp(&self, other: &&'a UStr<C>) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

This method tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

This method tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

This method tests greater than or equal to (for self and other) and is used by the >= operator.

impl<C: UChar> PartialOrd<UCStr<C>> for UStr<C>

fn partial_cmp(&self, other: &UCStr<C>) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

This method tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

This method tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

This method tests greater than or equal to (for self and other) and is used by the >= operator.

impl<C: UChar> PartialOrd<UStr<C>> for UCStr<C>

fn partial_cmp(&self, other: &UStr<C>) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

This method tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

This method tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

This method tests greater than or equal to (for self and other) and is used by the >= operator.

impl<C: UChar> PartialOrd<UStr<C>> for UCString<C>

fn partial_cmp(&self, other: &UStr<C>) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

This method tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

This method tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

This method tests greater than or equal to (for self and other) and is used by the >= operator.

impl<C: PartialOrd + UChar> PartialOrd<UStr<C>> for UStr<C>

fn partial_cmp(&self, other: &UStr<C>) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

This method tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

This method tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

This method tests greater than or equal to (for self and other) and is used by the >= operator.

impl<C: UChar> PartialOrd<UStr<C>> for UString<C>

fn partial_cmp(&self, other: &UStr<C>) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

This method tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

This method tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

This method tests greater than or equal to (for self and other) and is used by the >= operator.

impl<C: UChar> ToOwned for UStr<C>

type Owned = UString<C>

The resulting type after obtaining ownership.

fn to_owned(&self) -> UString<C>

Creates owned data from borrowed data, usually by cloning.

fn clone_into(&self, target: &mut Self::Owned)

🔬 This is a nightly-only experimental API. (toowned_clone_into)

recently added

Uses borrowed data to replace owned data, usually by cloning.

impl<C: Eq + UChar> Eq for UStr<C>

impl<C: UChar> StructuralEq for UStr<C>

impl<C: UChar> StructuralPartialEq for UStr<C>