Type Alias ckb_db_schema::Col

pub type Col = &'static str;

Column families alias type

Trait Implementations

impl Default for &str

fn default() -> &str

Creates an empty str

impl !Error for &str

fn source(&self) -> Option<&(dyn Error + 'static)>

The lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0: use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0: replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

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

Provides type based access to context intended for error reports.

impl<'a, 'b> PartialEq<Cow<'a, str>> for &'b str

fn eq(&self, other: &Cow<'a, str>) -> bool

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

fn ne(&self, other: &Cow<'a, str>) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<'a> PartialEq<OsString> for &'a str

fn eq(&self, other: &OsString) -> 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 !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<'a, 'b> PartialEq<String> for &'a str

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

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

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

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<'a, 'b> Pattern<'a> for &'b str

Non-allocating substring search.

Will handle the pattern "" as returning empty matches at each character boundary.

Examples

assert_eq!("Hello world".find("world"), Some(6));

fn is_prefix_of(self, haystack: &'a str) -> bool

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

Checks whether the pattern matches at the front of the haystack.

fn is_contained_in(self, haystack: &'a str) -> bool

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

Checks whether the pattern matches anywhere in the haystack

fn strip_prefix_of(self, haystack: &'a str) -> Option<&'a str>

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

Removes the pattern from the front of haystack, if it matches.

fn is_suffix_of(self, haystack: &'a str) -> bool

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

Checks whether the pattern matches at the back of the haystack.

fn strip_suffix_of(self, haystack: &'a str) -> Option<&'a str>

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

Removes the pattern from the back of haystack, if it matches.

type Searcher = StrSearcher<'a, 'b>

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

Associated searcher for this pattern

fn into_searcher(self, haystack: &'a str) -> StrSearcher<'a, 'b>

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

Constructs the associated searcher from self and the haystack to search in.

impl<'a> TryFrom<&'a OsStr> for &'a str

fn try_from( value: &'a OsStr ) -> Result<&'a str, <&'a str as TryFrom<&'a OsStr>>::Error>

Tries to convert an &OsStr to a &str.

use std::ffi::OsStr;

let os_str = OsStr::new("foo");
let as_str = <&str>::try_from(os_str).unwrap();
assert_eq!(as_str, "foo");

type Error = Utf8Error

The type returned in the event of a conversion error.