Crate sp_std

Lowest-abstraction level for the Substrate runtime: just exports useful primitives from std or client/alloc to be used with any code that depends on the runtime. Substrate runtime standard library as compiled when linked with Rust’s standard library.

Modules

alloc

Memory allocation APIs.

any

Utilities for dynamic typing or type reflection.

borrow

A module for working with borrowed data.

boxed

The Box<T> type for heap allocation.

cell

Shareable mutable containers.

clone

The Clone trait for types that cannot be ‘implicitly copied’.

cmp

Utilities for comparing and ordering values.

collections

convert

Traits for conversions between types.

default

The Default trait for types with a default value.

fmt

Utilities for formatting and printing Strings.

hash

Generic hashing support.

iter

Composable external iteration.

marker

Primitive traits and types representing basic properties of types.

mem

Basic functions for dealing with memory.

num

Additional functionality for numerics.

ops

Overloadable operators.

prelude

Prelude of common useful imports.

ptr

Manually manage memory through raw pointers.

rc

Single-threaded reference-counting pointers. ‘Rc’ stands for ‘Reference Counted’.

result

Error handling with the Result type.

slice

Utilities for the slice primitive type.

str

Utilities for the str primitive type.

sync

Useful synchronization primitives.

thread

time

Temporal quantification.

vec

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

Macros

if_std

Feature gate some code that should only be run when std feature is enabled.

map

Initialize a key-value collection from array.

vec

Creates a Vec containing the arguments.

Structs

Writer

A target for core::write! macro - constructs a string in memory.