cerc-io/eth-iterator-utils
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don't prepend (nil, 0], make first bin start at nil

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This commit is contained in:
Roy Crihfield 2020-09-06 12:52:16 -05:00
parent deb8b6b71c
commit 321f5fe368
1 changed files with 2 additions and 3 deletions
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5
pkg/iterator/iterator.go
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@ -138,9 +138,8 @@ func MakePaths(prefix []byte, nbins uint) [][]byte {
func eachPrefixRange(prefix []byte, nbins uint, callback func ([]byte, []byte)) {
prefixes := MakePaths(prefix, nbins)
// pre- and postpend nil to include root & tail
prefixes = append(prefixes, nil)
prefixes = append([][]byte{nil}, prefixes...)
prefixes = append(prefixes, nil) // include tail
prefixes[0] = nil // set bin 0 left bound to nil to include root
for i := 0; i < len(prefixes)-1; i++ {
key := prefixes[i]
if len(key)%2 != 0 { // zero-pad for odd-length keys