pub struct INDEX {
__private_field: (),
}
Extracts a string slice containing the entire String
.
Basic usage:
let s = String::from("foo");
assert_eq!("foo", s.as_str());
Returns this String
’s capacity, in bytes.
Basic usage:
let s = String::with_capacity(10);
assert!(s.capacity() >= 10);
Returns a byte slice of this String
’s contents.
The inverse of this method is from_utf8
.
Basic usage:
let s = String::from("hello");
assert_eq!(&[104, 101, 108, 108, 111], s.as_bytes());
Returns the length of this String
, in bytes, not char
s or
graphemes. In other words, it may not be what a human considers the
length of the string.
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);
Returns true
if this String
has a length of zero, and false
otherwise.
Basic usage:
let mut v = String::new();
assert!(v.is_empty());
v.push('a');
assert!(!v.is_empty());
The resulting type after dereferencing.
impl<T> Any for T where
T: 'static + ?Sized,
Immutably borrows from an owned value. Read more
Mutably borrows from an owned value. Read more
Instruments this type with the provided Span
, returning an
Instrumented
wrapper. Read more
Instruments this type with the current Span
, returning an
Instrumented
wrapper. Read more
impl<T, U> Into<U> for T where
U: From<T>,
The type returned in the event of a conversion error.
The type returned in the event of a conversion error.
impl<V, T> VZip<V> for T where
V: MultiLane<T>,