Struct TestDBKeysAsyncTryBuilder

pub struct TestDBKeysAsyncTryBuilder<'a, K, IterBuilder_: for<'this> FnOnce(&'this mut RwLockReadGuard<'a, BTreeMap<Vec<u8>, Vec<u8>>>) -> Pin<Box<dyn Future<Output = Result<Iter<'this, Vec<u8>, Vec<u8>>, Error_>> + 'this>>, Error_> {
    pub rows: RwLockReadGuard<'a, BTreeMap<Vec<u8>, Vec<u8>>>,
    pub iter_builder: IterBuilder_,
    pub phantom: PhantomData<K>,
}

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 try_build() or try_build_or_recover() to construct the actual struct. The fields of this struct should be used as follows:

Field	Suggested Use
rows	Directly pass in the value this field should contain
iter_builder	Use a function or closure: (rows: &mut _) -> Result<iter: _, Error_>
phantom	Directly pass in the value this field should contain

Fields

rows: RwLockReadGuard<'a, BTreeMap<Vec<u8>, Vec<u8>>>

iter_builder: IterBuilder_

phantom: PhantomData<K>

Implementations

impl<'a, K, IterBuilder_: for<'this> FnOnce(&'this mut RwLockReadGuard<'a, BTreeMap<Vec<u8>, Vec<u8>>>) -> Pin<Box<dyn Future<Output = Result<Iter<'this, Vec<u8>, Vec<u8>>, Error_>> + 'this>>, Error_> TestDBKeysAsyncTryBuilder<'a, K, IterBuilder_, Error_>

pub async fn try_build(self) -> Result<TestDBKeys<'a, K>, Error_>

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

pub async fn try_build_or_recover( self, ) -> Result<TestDBKeys<'a, K>, (Error_, Heads<'a, K>)>

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