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Add support for the async iterators #21

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merged 6 commits into from
Sep 1, 2023
Merged

Add support for the async iterators #21

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9c899be
db: add support for async iterators (generators).
nodech Aug 15, 2023
440e470
bench: add minimal iterator benchmarks.
nodech Aug 15, 2023
74afcbc
test: add test for the async generator filter.
nodech Aug 15, 2023
8922aa9
bench: remove cache size option.
nodech Aug 15, 2023
1d728a9
README: add for await example.
nodech Sep 1, 2023
d95bfad
pkg: remove exit 0 lint.
nodech Sep 1, 2023
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2 changes: 1 addition & 1 deletion .github/workflows/node.js.yml
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Original file line number Diff line number Diff line change
Expand Up @@ -15,7 +15,7 @@ jobs:
run: npm i -g bslint

- name: Lint
run: npm run lint-ci
run: npm run lint

build:
name: Build & Test
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18 changes: 17 additions & 1 deletion README.md
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Expand Up @@ -4,7 +4,7 @@ Database for bcoin (leveldown backend).

## Usage

``` js
```javascript
const bdb = require('bdb');
const db = bdb.create('/path/to/my.db');

Expand Down Expand Up @@ -40,6 +40,22 @@ await iter.each((key, value) => {
console.log('Value: %s', value.toString());
});

// Async Iterator is same, just used with for await syntax.:
// From: `rt[0000000000000000000000000000000000000000][00000000]`
// To: `rt[ffffffffffffffffffffffffffffffffffffffff][ffffffff]`
const asyncIter = bucket.iterator({
gte: myKey.min(),
lte: myKey.max(),
values: true
});

for await (const {key, value} of asyncIter) {
const [hash, index] = myKey.decode(key);
console.log('Hash: %s', hash.toString('hex'));
console.log('Index: %d', index);
console.log('Value: %s', value.toString());
}

await db.close();
```

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