我想知道在这种情况下花括号是什么意思?
uint64 configCount = s_configCount;
{
s_hotVars.latestConfigDigest = configDigestFromConfigData(
address(this),
configCount,
_signers,
_transmitters,
_threshold,
_encodedConfigVersion,
_encoded
);
s_hotVars.latestEpochAndRound = 0;
}```
他们为什么使用 {} ?他们为什么不像这样编写代码:
uint64 configCount = s_configCount;
s_hotVars.latestConfigDigest = configDigestFromConfigData(address(this),configCount,_signers,_transmitters,_threshold,_encodedConfigVersion,_encoded);
s_hotVars.latestEpochAndRound = 0;