'Curly Bracket in a solidity function

I would like to know what curly brackets mean in that case ?

uint64 configCount = s_configCount;
    {
      s_hotVars.latestConfigDigest = configDigestFromConfigData(
        address(this),
        configCount,
        _signers,
        _transmitters,
        _threshold,
        _encodedConfigVersion,
        _encoded
      );
      s_hotVars.latestEpochAndRound = 0;
    }```

Why did they use {} ? why they didn't wrote the code like this :

uint64 configCount = s_configCount;
s_hotVars.latestConfigDigest = configDigestFromConfigData(address(this),configCount,_signers,_transmitters,_threshold,_encodedConfigVersion,_encoded);
s_hotVars.latestEpochAndRound = 0;

solidity curly-braces

Solution 1:^[1]

Curly braces are for the scoping rules.

They also allocate a new stack frame. Because the small stack is a pain for developers in EVM. Scoping is needed with deep call structures to avoid stack too deep error.

Sources

This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.

Source: Stack Overflow

Solution	Source
Solution 1	Mikko Ohtamaa

'Curly Bracket in a solidity function

Solution 1:[1]

Sources

Related Questions

Solution 1:^[1]