...定义 discriminator。
```
Step 1: using sha256 for string "global:vote" and you will get the result:
e36e9b17887eac197678a3a9928f2dfc8a1d553a698244524539ebb858a2b4d0
Step 2: Take the first 16 letters and convert hex to 8 bytes array
e36e9b17887eac19 => [227, 110, 155, 23, 136, 126, 172, ...
...te’, e.block_time)
where block_time > now() — interval ’10 days’
and symbol = ‘ETH’
)select date_trunc(‘day’, block_time) as “Date”, sum(value * price / 1e18) as “Value” from txs
group by 1 order by 1
```
让我们逐行将其分解：
首先，我们创建一个...
...rough creating a package.json file.
It only covers the most common items, and tries to guess sensible defaults.
See `npm help json` for definitive documentation on these fields
and exactly what they do.
Use `npm install ` afterwards to install a package and
save it as a dependency in the pa...
...可用性。
Layer 2 区块链位于现有区块链之上，旨在帮助扩展 Layer 1 链。
## OVM 与 EVM 有何不同？
...