.length yields the fixed length of the byte array (read-only). so I think checkpoints.length++ is pointless, Can you explain its intention?I'm confused,thank you!

[17Damon]

minime/contracts/MiniMeToken.sol

Line 454 in c23d03c

Checkpoint storage newCheckPoint = checkpoints[ checkpoints.length++ ];

[nateawelch]

The length of an array isn't read only, you can update it like you can any other value. That line is essentially doing a .push(), but I believe it's cheaper than doing so.