Struct TestDBKeysBuilder

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pub struct TestDBKeysBuilder<'a, K, IterBuilder_: for<'this> FnOnce(&'this mut RwLockReadGuard<'a, BTreeMap<Vec<u8>, Vec<u8>>>) -> Iter<'this, Vec<u8>, Vec<u8>>> {
    pub rows: RwLockReadGuard<'a, BTreeMap<Vec<u8>, Vec<u8>>>,
    pub iter_builder: IterBuilder_,
    pub phantom: PhantomData<K>,
}
Expand description

A more verbose but stable way to construct self-referencing structs. It is comparable to using StructName { field1: value1, field2: value2 } rather than StructName::new(value1, value2). This has the dual benefit of making your code both easier to refactor and more readable. Call build() to construct the actual struct. The fields of this struct should be used as follows:

FieldSuggested Use
rowsDirectly pass in the value this field should contain
iter_builderUse a function or closure: (rows: &mut _) -> iter: _
phantomDirectly pass in the value this field should contain

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§rows: RwLockReadGuard<'a, BTreeMap<Vec<u8>, Vec<u8>>>§iter_builder: IterBuilder_§phantom: PhantomData<K>

Implementations§

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impl<'a, K, IterBuilder_: for<'this> FnOnce(&'this mut RwLockReadGuard<'a, BTreeMap<Vec<u8>, Vec<u8>>>) -> Iter<'this, Vec<u8>, Vec<u8>>> TestDBKeysBuilder<'a, K, IterBuilder_>

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pub fn build(self) -> TestDBKeys<'a, K>

Calls TestDBKeys::new() using the provided values. This is preferable over calling new() directly for the reasons listed above.

Auto Trait Implementations§

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impl<'a, K, IterBuilder_> Freeze for TestDBKeysBuilder<'a, K, IterBuilder_>
where IterBuilder_: Freeze,

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impl<'a, K, IterBuilder_> RefUnwindSafe for TestDBKeysBuilder<'a, K, IterBuilder_>
where IterBuilder_: RefUnwindSafe, K: RefUnwindSafe,

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impl<'a, K, IterBuilder_> !Send for TestDBKeysBuilder<'a, K, IterBuilder_>

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impl<'a, K, IterBuilder_> Sync for TestDBKeysBuilder<'a, K, IterBuilder_>
where IterBuilder_: Sync, K: Sync,

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impl<'a, K, IterBuilder_> Unpin for TestDBKeysBuilder<'a, K, IterBuilder_>
where IterBuilder_: Unpin, K: Unpin,

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impl<'a, K, IterBuilder_> UnwindSafe for TestDBKeysBuilder<'a, K, IterBuilder_>
where IterBuilder_: UnwindSafe, K: UnwindSafe,

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