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Add ImportObject maybe_with_namespace example #833

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Sep 25, 2019
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Add ImportObject maybe_with_namespace example #833

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1 change: 1 addition & 0 deletions CHANGELOG.md
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Expand Up @@ -6,6 +6,7 @@ Blocks of changes will separated by version increments.

## **[Unreleased]**

- [#833](https://github.com/wasmerio/wasmer/pull/833) Add doc example of using ImportObject's new `maybe_with_namespace` method
- [#832](https://github.com/wasmerio/wasmer/pull/832) Delete unused runtime ABI
- [#809](https://github.com/wasmerio/wasmer/pull/809) Fix bugs leading to panics in `LocalBacking`.
- [#822](https://github.com/wasmerio/wasmer/pull/822) Update Cranelift fork version to `0.43.1`
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8 changes: 8 additions & 0 deletions lib/runtime-core/src/import.rs
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Expand Up @@ -124,6 +124,14 @@ impl ImportObject {
}

/// The same as `with_namespace` but takes a function that may fail
/// # Usage:
/// ```
/// # use wasmer_runtime_core::import::{ImportObject, LikeNamespace};
/// # use wasmer_runtime_core::export::Export;
/// fn get_export(imports: &ImportObject, namespace: &str, name: &str) -> Option<Export> {
/// imports.maybe_with_namespace(namespace, |ns| ns.get_export(name))
/// }
/// ```
pub fn maybe_with_namespace<Func, InnerRet>(&self, namespace: &str, f: Func) -> Option<InnerRet>
where
Func: FnOnce(&(dyn LikeNamespace + Send)) -> Option<InnerRet>,
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