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trie: remove dead code #20405

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Merged
karalabe merged 1 commit into from
Nov 28, 2019
+0 −14
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trie: remove dead code #20405

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14 changes: 0 additions & 14 deletions trie/database.go
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Original file line number Diff line number Diff line change
Expand Up @@ -17,7 +17,6 @@
package trie

import (
"encoding/binary"
"errors"
"fmt"
"io"
Expand Down Expand Up @@ -272,19 +271,6 @@ func expandNode(hash hashNode, n node) node {
}
}

// trienodeHasher is a struct to be used with BigCache, which uses a Hasher to
// determine which shard to place an entry into. It's not a cryptographic hash,
// just to provide a bit of anti-collision (default is FNV64a).
//
// Since trie keys are already hashes, we can just use the key directly to
// map shard id.
type trienodeHasher struct{}

// Sum64 implements the bigcache.Hasher interface.
func (t trienodeHasher) Sum64(key string) uint64 {
return binary.BigEndian.Uint64([]byte(key))
}

// NewDatabase creates a new trie database to store ephemeral trie content before
// its written out to disk or garbage collected. No read cache is created, so all
// data retrievals will hit the underlying disk database.
Expand Down