Scanning Live Ethereum of Unchecked-Send Error Contracts. Part 2

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How to update the code of smart contracts in Ethereum

How to update the code of smart contracts in Ethereum 3r31146. 3r3-31.

How to update the code of smart contracts in Ethereum /Part 1

3r31131.  3r31146. 3r31-104. 3r31099. The article assumes that the reader has a basic understanding of how Ethereum, EVM (Ethereum Virtual Machine) and smart contracts work at a technical level, as well as an understanding of the fundamentals of the smart contract programming language Solidity. 3r31100. 3r31135. of example 3r31134. Let us recall an error in one of Parity’s wallet libraries, which led to the freezing of the air at a cost of $ 160 million 3r31135. 3r31131.  3r31146. 3r31-104. Therefore, the ability ...[/h]
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HyperX Impact DDR4 - SO-DIMM, which could! Or why in a laptop 64 GB of memory with a frequency of 3200 MHz?

For untrained users, the purchase of such a high-frequency memory in the SO-DIMM form factor may seem like a strange decision, but in fact, such a move can be justified in several scenarios of using a laptop or mini-PC. And in this material we will not focus on synthetics - only real applications and games!
 
 
HyperX Impact DDR4 - SO-DIMM, which could! Or why in a laptop 64 GB of memory with a frequency of 3200 MHz?  
3r311.
 
Immediately I must say about the available options HyperX Impact DDR4 . ? ? and 16 GB modules are available on the market, either alone or in sets of 2 or 4 pieces. Clock frequencies can also be chosen - from 2133 to 3200 MHz. Not all combinations are available (for example, there ...
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Recruitment of a new level - the use of Ethereum

The time in which we live has long been called the period of information decentralization. More and more projects are moving away from storing information on one (or several) servers to use Blockchain technology. Our team is honored to be part of a great idea - the development of a Job Board, where the bulk of business logic is implemented on the so-called smart contracts .
 
 
Recruitment of a new level - the use of Ethereum  
Kirill Varlamov so described the need to create the required functional:
 
Recruiting is a funnel with filters. Analogy - first a cheap coarse filter (test), then a more ...
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Oracles, or why smart contracts still have not changed the world?

Oracles, or why smart contracts still have not changed the world?For those who are interested in the topic of smart contracts, the answer to the question given in the header lies on the surface: to date, contracts do not have a reliable and complete source of information about what is happening in the real world. As a result of this, a nasty situation develops: we can describe complex logic in a smart contract, and the block will provide us with its unconditional execution. And now, it would seem, we are a step away from getting rid of the need for a third party when concluding contracts - that is what was meant by the words "change the world" in the title...
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Block-based derivatives: solving the problem by $ 500 trillion and winning the hakaton Consensus 2018

On May 11 and 1? 201? the 8base team in the person of me, Evgeny Semushin and Gabe Kelly decided to test their strength and compete for the AlphaPoint prize on the hakaton. Consensus 2018 , which was held in New York. A total of 33 teams participated in the hackathon, and among its sponsors were such giants as CoinDesk, Microsoft, IBM, Hyperledger and Quorum.
 
 
Block-based derivatives: solving the problem by $ 500 trillion and winning the hakaton Consensus 2018
 
 
At the AlphaPoint competition, we had to write an application linked to the crypto exchange, so we hoped that my experience in the hedge fund would be very useful. We wanted to create something more than a front-end to the existing block-decision...
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How to write a smart contract for ICO in 5 minutes

How to write a smart contract for ICO in 5 minutes  
 
Hello! In this article I will tell you how in 5 minutes and several teams in the terminal to launch a smart money collection contract for their ICO on Ethereum. This essay will potentially save you tens of thousands of US dollars, since any programmer - and not a programmer too - will be able to run a pro-audited and secure smart contract (instead of paying $ 1?000 - $ 7?000 for development). In short, you can send money to this smart contract and get tokens for this ERC20.
 
 
We can say that this article is a collection of all the experience that I got by launching the ICO for my project. Smart contract...
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Workshops on the development of smart contracts on Solidity

Workshops on the development of smart contracts on Solidity
 
We bring to your attention videos of a series of workshops about smart contracts in Ethereum. Our goal is to show companies and ordinary people how to use smart contracts, what advantages they can give in various fields of activity. We want them to enter the everyday life, become clear and close to everyone. And we believe that in the future the overwhelming majority of paper contracts and other interactions in the society will be replaced by smart contracts.
 
Today our main task is to create a community of programmers and inspire them to use smart contracts. This is why we conduct our regular workshops.
 
The l...
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How to write a decentralized multi-brokerage exchange for a day

How to write a decentralized multi-brokerage exchange for a day  
 
This article is a report on my participation in the second stage of the hakaton organized by karma.red . More information about the hakaton can be read at special page .
 
 
For those who like to read the code, not articles - project repository .
 
 
Fans of the video are also not offended :) In this video you can listen to a brief article, see how the exchange is implemented step by step and see its work live.
 
 
Article another participant in the hakaton from Vladivostok (the three guys from Vladik and one from ...
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As we play "Stone-scissors-paper" on the blockade Ethereum did. Part 2 Technical

Taking into account the comments to my the previous article I decided to write the second part, where the technical component of the game will be examined in more detail.
 
) [url]Https://js2.coffee[/url] ):
 
 
# We listen to the winner
this.autorun =>
filter5 = contractInstance.Winner {room: Number (FlowRouter.getParam ('id')),}, {fromBlock: ? toBlock: 'latest', address: contrAdress}
filter5.watch (error, result) ->
console.log result
if result
instance.winner.set result.args.win
console.log result.args.win
UIkit.modal ("# modal-winner"). Show ()

 
Apparently, we are referring to the ...
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