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Call between Ethereum contracts

Publish: 2021-05-20 03:22:53
1. Gas & gt; ethestimateGas({ from:ethaccounts [1], to: ethaccounts[2], value:50000000000000 }) 21001 > Ethgasprice 2000000000, as shown above, shows this account [1] = & gt; The transaction of account [2] needs 21001 gas, and the current gasprice is 2000000000. How many gas does it take to send transaction / call contract method in Ethereum
2.
  1. with the recent sharp fluctuation of currency prices, a new profession, commonly known as "brick moving", is graally emerging in the circle. These brick moving workers pay close attention to the major bitcoin and Ethereum transactions every day. Once they find the price difference, they buy bitcoin and Ethereum from the low price and sell them from the high price to make profit

  2. with the increasing number of bitcoin and Ethereum transactions, according to incomplete statistics, the number of current international mainstream bitcoin transactions is graally increasing. Different from A-share and other stock markets, the stock price is globally unified. For example, the stock price of technology has the only pricing in Hong Kong stock market. However, the prices of bitcoin and Ethereum are determined by the transaction itself. Because Ethereum has a large number of transactions and different transaction volumes, the transaction price is very likely to fall. When the price fall is large, it can even reach 8% ~ 10% of Ethereum's price. At this time, many porters have the opportunity to move bricks. The so-called "brick" of moving bricks refers to Ethereum. Porters buy Ethereum from the low price and then transfer it to the high price to get the price difference

  3. for example, the recent sharp fluctuations in bitcoin and Ethereum markets are a good time to move bricks. Generally speaking, as long as there is a price difference of 5-50 yuan between bitcoin and Ethereum, it is worth moving bricks. However, moving bricks also requires certain transfer costs and labor costs. Sometimes, the withdrawal of bitcoin purchased from low price will not arrive so quickly. In order to speed up the transaction speed and rece the risk of price fluctuation, the porter usually has a turnover of bitcoin. For example, after purchasing bitcoin and Ethereum from a, he immediately transfers the same amount of bitcoin from his wallet to B for sale, After the completion of bilateral transactions, graally withdraw the funds into their wallets, waiting for the next time to move bricks. If you have both cash and bitcoin and Ethereum, it's the safest. You can pay at a low price and register at a high price, and then trade at the same time. The transaction can be completed in a few seconds. At this time, there is little risk in moving bricks, and what you get is pure profit. When the price of bitcoin fluctuates greatly, part of the price response is not so fast, and the profit of moving bricks is the highest

  4. 2. Adopt large-scale high-end cloud computing, short or long currency transactions all over the world (low absorption and high selling), complete the transaction within 0.28 MS, and increase the value by floating trading point without upper limit, so as to ensure the dividend appreciation of each person

  5. 3. They use the money of the participants to earn profits, and then give 50% to the participants, from Monday to Friday, and do not distribute on weekends. How much you earn depends on whether you have a big package or a small one

  6. if you have any questions, please let me know. 5: 185 plus 654 and 39360

  7. < / OL >
3.

Yes, refer to the interaction between contracts. Digital currency exchange platform for example, I am trying to sign a smart contract from another factory contract and then redeploy the address of the new smart contract. However, the address it returns is the transaction hash, not the contract address. I believe this is because when the address is returned, the contract has not been exploited. When I deploy the smart contract with Web3, it seems that it will not output the contract address until the smart contract is deployed

4. As long as you can pay the deposit, choose the right direction.
5. Just like a contract to buy bitcoin, you can choose, perpetual or delivery.
6. Contract code of Ethereum. If the WPS document is used to analyze the , it's not clear.
I haven't touched it
7. There is no inevitable relationship between whether the virtual currency will disappear or not and whether it can not be used on the third-party platform. Online third-party trading platform can only say that this kind of currency has another platform for trading, which shows that this kind of currency is more reliable
Ruitai coin has not been launched on the third-party platform, but it is rumored that it will also be launched on the third-party platform.
8. I've just seen Percy Jackson and the robber of divine fire. It's a bit like Harry Potter, but I think it's very good-looking. It's a story with Greek mythology
Percy Jackson is an ordinary 12-year-old boy who was diagnosed with dyslexia and hyperactivity disorder. During a field trip organized by the school, he was interviewed by his algebra teacher; Specific function & quot; Scared me. After that, Percy Jackson found that he was not an ordinary person, but a mythical figure and a descendant of human beings< After discovering the mystery of his life, Percy Jackson was sent to a special school. The children studying in this school are the offspring of many mythical characters. When Percy Jackson came to school, Poseidon immediately declared Jackson his own child. In this school, Percy Jackson met two good friends. One is the beautiful Annabeth chase, the descendant of Athena, the goddess of wisdom and skill; The other is Grover Underwood, a descendant of orcs. Not long in the school, Percy Jackson was accused by the gods of stealing the thunder rod of Zeus. Percy Jackson is required to hand over his thunder wand within 10 days, otherwise, his mother will be killed by these gods, and the war between the gods is inevitable...

there is still one minute left: three discriminated high school students have invented a time machine that allows them to go back in time and change their social status, And help other unfairly treated children to avoid the humiliation of discrimination in high school
twilight 2, new moon and 1 are about vampires. Bella (Kristen Stewart) is 18 years old and her father gives her a gift. Edward (Robert Pattinson) shows her love generously and tells her the legend of the Italian vampire king. Edward's red haired sister Alice (Ashley Greene, Ashley Greene) holds a birthday party specially for Bella. During the party, Bella accidentally cuts her arm and is attacked by Gaspar. Only with Edward's protection can she escape. However, since then, Edward graally alienated Bella and proposed to break up. This makes Bella cold, but Edward also has difficulties, still secretly protect Bella. Bella is in the empty window period, and her old friend Jacob (Taylor Lautner) makes a warm call, which makes their relationship warm up. Since then, Bella because of the cliff rescue, just know that Jacob is a werewolf, specialized in dealing with vampires. At the same time, Edward, who didn't know about it, thought Bella had committed suicide and was disheartened. He came to Italy to ask the royal family to end his life...

bloodthirsty daybreak, I think the ending is a little ironic
2012 is also very good, and the fantasy show of Arthur and his mini kingdom is also very good
9. You can choose by yourself, and the minimum gas quantity is different for different contracts. General minimum 6000gas
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