Module prelude 

Rust module prelude for Wasmtime crates.

Wasmtime crates that use no_std use core::prelude::* by default which does not include alloc-related functionality such as String and Vec. To have similar ergonomics to std and additionally group up some common functionality this module is intended to be imported at the top of all modules with:

use crate::*;

Externally for crates that depend on wasmtime-environ they should have this in the root of the crate:

use wasmtime_environ::prelude;

and then use crate::* works as usual.

Modules

vec

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

Macros

anyhow

Construct an ad-hoc error from a string or existing non-anyhow error value.

bail

Return early with an error.

ensure

Return early with an error if a condition is not satisfied.

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.

Error

The Error type, a wrapper around a dynamic error type.

IndexMap

A hash table where the iteration order of the key-value pairs is independent of the hash values of the keys.

IndexSet

A default set of values.

String

A UTF-8–encoded, growable string.

Vec

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

Traits

Context

Provides the context method for Result.

ToOwned

A generalization of Clone to borrowed data.

ToString

A trait for converting a value to a String.

Type Aliases

Result

Result<T, Error>