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.