Module alloc::str

Unicode string slices.

See also the str primitive type.

The &str type is one of the two main string types, the other being String. Unlike its String counterpart, its contents are borrowed.

Basic Usage

A basic string declaration of &str type:

let hello_world = "Hello, World!";

Here we have declared a string literal, also known as a string slice. String literals have a static lifetime, which means the string hello_world is guaranteed to be valid for the duration of the entire program. We can explicitly specify hello_world's lifetime as well:

let hello_world: &'static str = "Hello, world!";

Modules

pattern

Experimental The string Pattern API.

Structs

Bytes	An iterator over the bytes of a string slice.
CharIndices	An iterator over the chars of a string slice, and their positions.
Chars	An iterator over the chars of a string slice.
EncodeUtf16	An iterator of u16 over the string encoded as UTF-16.
EscapeDebug	The return type of str::escape_debug.
EscapeDefault	The return type of str::escape_default.
EscapeUnicode	The return type of str::escape_unicode.
Lines	An iterator over the lines of a string, as string slices.
LinesAny	Deprecated Created with the method lines_any.
MatchIndices	Created with the method match_indices.
Matches	Created with the method matches.
ParseBoolError	An error returned when parsing a bool using from_str fails
RMatchIndices	Created with the method rmatch_indices.
RMatches	Created with the method rmatches.
RSplit	Created with the method rsplit.
RSplitN	Created with the method rsplitn.
RSplitTerminator	Created with the method rsplit_terminator.
Split	Created with the method split.
SplitAsciiWhitespace	An iterator over the non-ASCII-whitespace substrings of a string, separated by any amount of ASCII whitespace.
SplitN	Created with the method splitn.
SplitTerminator	Created with the method split_terminator.
SplitWhitespace	An iterator over the non-whitespace substrings of a string, separated by any amount of whitespace.
Utf8Error	Errors which can occur when attempting to interpret a sequence of u8 as a string.

Traits

FromStr

Parse a value from a string

Functions

from_boxed_utf8_unchecked⚠	Converts a boxed slice of bytes to a boxed string slice without checking that the string contains valid UTF-8.
from_utf8	Converts a slice of bytes to a string slice.
from_utf8_mut	Converts a mutable slice of bytes to a mutable string slice.
from_utf8_unchecked⚠	Converts a slice of bytes to a string slice without checking that the string contains valid UTF-8.
from_utf8_unchecked_mut⚠	Converts a slice of bytes to a string slice without checking that the string contains valid UTF-8; mutable version.