波场上如何计算矿工费 / 学习智能合约#40 by lemooljiang

hive-105017 · @lemooljiang · Mar 1 '21

$7.14

波场上如何计算矿工费 / 学习智能合约#40

在以太坊上有个专门的函数来计算矿工费`web3.eth.estimateGas`，这样在调用合约前可以有效地设置gas的上限，矿工费等于 gas * gasPrice。那么， 波场上如何计算矿工费呢？

查了波场的手册半天，没有查到`estimateGas`这个类似的函数，也就是说，在调用合约前是没办法计算出要消耗多少能量的。只有调用后在tronscan上查交易记录才能得出！这多少有点事后诸葛亮的意思。

![trongas.jpg](https://steemjiang.com:8081/ipfs/QmRvFMCFUV4Ge7NsaRbFCs16ia4Gf61nyEWmZmCjCFX5xL)

以nutbox中的withdrawPeanuts()为例，这步调用消耗了88236个能量。

![trongas2.jpg](https://steemjiang.com:8081/ipfs/QmUxRN2auV9oMFWg2C3zx37Agx2BWNEUxisFGW8HoE5Xis)

https://tronscan.org/#/proposals

在超级节点的提案中`1 ENERGY的费用为 0.00014 TRX`。计算下：矿工费等于 能量 * 能量价格 = 88236*0.00014 = 12.35304 trx， 和tronscan中的一致！

在波场中计算矿工费只能调用后才能知道，不知这算不算是个坑点呢！

👍 sweetsssj, rivalhw, nextgen622, ace108, ctime, aafeng, karja, catwomanteresa, julian2013, btscn, hqy, dapeng, tvb, intacto, new-world-steem, pet.society, alphacore, cn-reader, htliao, dancingapple, kimzwarch, yellowbird, blc, laodr, lebin, liangfengyouren, fun2learn, kggymlife, archisteem, competeapp, moneybaby, bilpcoinrecords, hivecur2, tagalong, stevenmosoes, kymio

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