Module prelude

Available on crate feature std only.

Provides implementation for basic std types, without assuming we have a std library.

This module is used to avoid having #[cfg(feature = "no-std")] sprinkled around all crates that support no-std. It imports all types we would use from the stdlib, either from the lib itself, or from other sources in case stdlib isn’t available.

Modules

fmt

Utilities for formatting and printing Strings.

sync

Useful synchronization primitives.

vec

A contiguous growable array type with heap-allocated contents, written Vec<T>.

Macros

format

Creates a String using interpolation of runtime expressions.

vec

Creates a Vec containing the arguments.

Structs

Box

A pointer type that uniquely owns a heap allocation of type T.

Formatter

Configuration for formatting.

HashMap

A hash map implemented with quadratic probing and SIMD lookup.

HashSet

A hash set implemented as a HashMap where the value is ().

String

A UTF-8–encoded, growable string.

Vec

A contiguous growable array type, written as Vec<T>, short for ‘vector’.

ioError

The error type for I/O operations of the Read, Write, Seek, and associated traits.

Enums

Entry

A view into a single entry in a map, which may either be vacant or occupied.

Result

Result is a type that represents either success (Ok) or failure (Err).

Traits

Deref

Used for immutable dereferencing operations, like *v.

DerefMut

Used for mutable dereferencing operations, like in *v = 1;.

Display

Format trait for an empty format, {}.

Error

Error is a trait representing the basic expectations for error values, i.e., values of type E in Result<T, E>.

FromStr

Parse a value from a string

Read

The Read trait allows for reading bytes from a source.

ToOwned

A generalization of Clone to borrowed data.

ToString

A trait for converting a value to a String.

Write

A trait for objects which are byte-oriented sinks.