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Replace direct use of 0 with SetNull and IsNull

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Replace x=0 with .SetNull(),
x==0 with IsNull(), x!=0 with !IsNull().
Replace uses of uint256(0) with uint256().
This commit is contained in:
Wladimir J. van der Laan
2014-12-15 09:11:16 +01:00
parent 5d3064bc44
commit 4f1524966a
28 changed files with 68 additions and 68 deletions
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6
src/txdb.cpp
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@@ -39,7 +39,7 @@ bool CCoinsViewDB::HaveCoins(const uint256 &txid) const {
uint256 CCoinsViewDB::GetBestBlock() const {
uint256 hashBestChain;
if (!db.Read('B', hashBestChain))
return uint256(0);
return uint256();
return hashBestChain;
}
@@ -56,7 +56,7 @@ bool CCoinsViewDB::BatchWrite(CCoinsMap &mapCoins, const uint256 &hashBlock) {
CCoinsMap::iterator itOld = it++;
mapCoins.erase(itOld);
}
if (hashBlock != uint256(0))
if (!hashBlock.IsNull())
BatchWriteHashBestChain(batch, hashBlock);
LogPrint("coindb", "Committing %u changed transactions (out of %u) to coin database...\n", (unsigned int)changed, (unsigned int)count);
@@ -179,7 +179,7 @@ bool CBlockTreeDB::LoadBlockIndexGuts()
boost::scoped_ptr<leveldb::Iterator> pcursor(NewIterator());
CDataStream ssKeySet(SER_DISK, CLIENT_VERSION);
ssKeySet << make_pair('b', uint256(0));
ssKeySet << make_pair('b', uint256());
pcursor->Seek(ssKeySet.str());
// Load mapBlockIndex