News Tuesday, July 17

How could msg.sender != tx.origin AND extcodesize(caller) == 0 be true?

  • I’m working on a puzzle where , so the implication is that the needs to be a contract or at least something in between the calling account.
  • But also needs to be true.
  • So the caller needs to be an address or externally owned account.
  • How can both of these be true?
  • Can the caller’s codesize ever be 0 if not an address/EOA?

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How could msg.sender != tx.origin AND extcodesize(caller) == 0 be true?

Unable to declare public mapping in Solidity

  • The problem here seems to be with the getters that are created when you declare the variables public, changing the visibility to internal cancels the error.
  • In this answer it is explained that passing nested arrays is the problem.
  • Note that in both cases adding a fix-length variable to the structs cancels the errors.

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Unable to declare public mapping in Solidity

My CryptoZombie ddf45 just ate a CryptoKitty and leveled up!

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My CryptoZombie ddf45 just ate a CryptoKitty and leveled up!

Data Blockchain ICO bench, DBC ICO, DBCC Coins

  • DataBlockChain.io is a revolutionary data platform that stands to disrupt the way that companies and individuals gather premium data.
  • The result is that clients can access specific data sets in a cost-effective and transparent way, collecting exactly what they need without paying for extraneous data.
  • Data is the backbone of the marketing boom, and DataBlockChain.io has the capability to be the category killer We will merge our own proprietary data with many of the world’s largest databases ranging from government data, industry specific data, voting records, business to business data, property data, credit bureau data,…
  • The level of access to quality data DataBlockChain.io offers has been cost prohibitive for most companies outside of the Fortune 500, but as a result of our platform, all participants will be able to obtain the exact, nuanced data they are seeking.
  • Because DataBlockChain.io removes the middlemen in the data industry that tend to drive prices up and cause inefficiencies, no order size will be too small to fulfill.

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Data Blockchain ICO bench, DBC ICO, DBCC Coins | DataBlockChain.io

面向老程序员的Solidity摘要 – 简书

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面向老程序员的Solidity摘要 – 简书

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Page Not Found – Ethereum Stack Exchange

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Page Not Found – Ethereum Stack Exchange

eStories

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eStories

仮想通貨PJメンバー募集

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仮想通貨PJメンバー募集

OUR DAOs ARE UNHACKABLE. WE ANNOUNCE A $100K HACKING CONTEST TO PROVE IT.

  • There is a DAO created using the Daox Platform ( smart contract with funds in it).
  • The objective is either to make the funds to completely freeze, or to transfer them to your Ethereum address.
  • The address of the DAO: – – 1.
  • Because one of the objective also includes the disruption of DAO (completely freezing the funds).
  • What if I have found bugs that are not affecting the funds?

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OUR DAOs ARE UNHACKABLE. WE ANNOUNCE A $100K HACKING CONTEST TO PROVE IT.

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Ethereum : Decentralized Application Design & Development (9,794 students enrolled)

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