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ba5407615d
The doc formatting changes introduced in the recent go version is increasing the diff for all of the new commits. Formatting it all in this commit will help the readability of future PRs by reducing the diff.
45 lines
1.3 KiB
Go
45 lines
1.3 KiB
Go
// Copyright (c) 2014-2016 The btcsuite developers
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// Use of this source code is governed by an ISC
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// license that can be found in the LICENSE file.
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package bloom_test
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import (
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"fmt"
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"math/rand"
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"time"
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"github.com/btcsuite/btcd/btcutil/bloom"
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"github.com/btcsuite/btcd/chaincfg/chainhash"
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"github.com/btcsuite/btcd/wire"
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)
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// This example demonstrates how to create a new bloom filter, add a transaction
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// hash to it, and check if the filter matches the transaction.
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func ExampleNewFilter() {
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rand.Seed(time.Now().UnixNano())
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tweak := rand.Uint32()
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// Create a new bloom filter intended to hold 10 elements with a 0.01%
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// false positive rate and does not include any automatic update
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// functionality when transactions are matched.
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filter := bloom.NewFilter(10, tweak, 0.0001, wire.BloomUpdateNone)
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// Create a transaction hash and add it to the filter. This particular
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// trasaction is the first transaction in block 310,000 of the main
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// bitcoin block chain.
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txHashStr := "fd611c56ca0d378cdcd16244b45c2ba9588da3adac367c4ef43e808b280b8a45"
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txHash, err := chainhash.NewHashFromStr(txHashStr)
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if err != nil {
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fmt.Println(err)
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return
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}
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filter.AddHash(txHash)
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// Show that the filter matches.
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matches := filter.Matches(txHash[:])
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fmt.Println("Filter Matches?:", matches)
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// Output:
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// Filter Matches?: true
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}
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