Struct libreda_db::rc_string::RcString

pub struct RcString { /* fields omitted */ }

Resource counted string, used for names. RcStrings can be efficiently cloned.

Implementations

impl RcString

pub fn new(string: String) -> Self

Create a new resource counted string.

Methods from Deref<Target = String>

pub fn as_str(&self) -> &str

Extracts a string slice containing the entire String.

Examples

Basic usage:

let s = String::from("foo");

assert_eq!("foo", s.as_str());

pub fn capacity(&self) -> usize

Returns this String’s capacity, in bytes.

Examples

Basic usage:

let s = String::with_capacity(10);

assert!(s.capacity() >= 10);

pub fn as_bytes(&self) -> &[u8]

Returns a byte slice of this String’s contents.

The inverse of this method is from_utf8.

Examples

Basic usage:

let s = String::from("hello");

assert_eq!(&[104, 101, 108, 108, 111], s.as_bytes());

pub fn len(&self) -> usize

Returns the length of this String, in bytes, not chars or graphemes. In other words, it might not be what a human considers the length of the string.

Examples

Basic usage:

let a = String::from("foo");
assert_eq!(a.len(), 3);

let fancy_f = String::from("ƒoo");
assert_eq!(fancy_f.len(), 4);
assert_eq!(fancy_f.chars().count(), 3);

pub fn is_empty(&self) -> bool

Returns true if this String has a length of zero, and false otherwise.

Examples

Basic usage:

let mut v = String::new();
assert!(v.is_empty());

v.push('a');
assert!(!v.is_empty());

Trait Implementations

impl Borrow<String> for RcString

fn borrow(&self) -> &String

Immutably borrows from an owned value.

impl Borrow<str> for RcString

fn borrow(&self) -> &str

Immutably borrows from an owned value.

impl Clone for RcString

fn clone(&self) -> RcString

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for RcString

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Deref for RcString

type Target = String

The resulting type after dereferencing.

fn deref(&self) -> &Self::Target

Dereferences the value.

impl Display for RcString

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl From<&'_ Rc<String>> for RcString

fn from(string: &Rc<String>) -> Self

Performs the conversion.

impl From<&'_ str> for RcString

fn from(s: &str) -> Self

Performs the conversion.

impl From<Rc<String>> for RcString

fn from(string: Rc<String>) -> Self

Performs the conversion.

impl From<String> for RcString

fn from(string: String) -> Self

Performs the conversion.

impl Hash for RcString

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 Into<String> for RcString

fn into(self) -> String

Performs the conversion.

impl Ord for RcString

fn cmp(&self, other: &RcString) -> 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 PartialEq<RcString> for RcString

fn eq(&self, other: &RcString) -> bool

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

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

This method tests for !=.

impl PartialOrd<RcString> for RcString

fn partial_cmp(&self, other: &RcString) -> 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 Eq for RcString

impl StructuralEq for RcString

impl StructuralPartialEq for RcString