Module std::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

patternExperimental

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.

LinesAnyDeprecated

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.

SplitInclusive

An iterator over the substrings of a string, terminated by a substring matching to a predicate function Unlike Split, it contains the matched part as a terminator of the subslice.

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.