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Security Alert - Solidity - Variables can be overwritten in storage
Summary: In some situations, variables can overwrite other variables in storage. Affected Solidity compiler versions: 0.1.6 to 0.4.3 (including 0.4.4 pre-release versions) Detailed description: Storage variables that are smaller than 256 bits are packed together into the same 256 bit slot if they can fit. If a...
Published on: November 01, 2016 | Source:
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Uncle Rate and Transaction Fee Analysis
One of the important indicators of how much load the Ethereum blockchain can safely handle is how the uncle rate responds to the gas usage of a transaction. In all blockchains of the Satoshian proof-of-work variety, any block that is published has the risk of howbecoming a "stale", ie. not...
Published on: October 31, 2016 | Source:Issue 274
The TouchBar! Links to all the developer APIs for it. How do you use NSCoding with structs and more on analytics in your apps.
Published on: October 28, 2016 | Source:Security Alert - Mist can be vulnerable when navigating to malicious DApps
Mist leaks some low level APIs, which Dapps could use to gain access to the computer's file system and read/delete files. This would only affect you if you navigate to an untrusted Dappthatknows about these vulnerabilities and specifically tries to attack users. Upgrading Mist is highly recommended to prevent exposure...
Published on: October 27, 2016 | Source:Issue 273
CocoaPods 1.1 released. Speed up your simulator builds and taming the NSTimer API
Published on: October 21, 2016 | Source:FAQ: Upcoming Ethereum Hard Fork
The Ethereum network will be undergoing a hard fork at block number 2463000, which will likely occur between 12:00 and 13:00 UTC on Tuesday, October 18, 2016. A countdown timer can be seen at https://fork.codetract.io/....
Published on: October 18, 2016 | Source:Issue 272
What is the schedule, and scope of Swift 4? Should you buy App Store search ads for your competitors keywords? and more info on Swift and Android.
Published on: October 14, 2016 | Source:Announcement of imminent hard fork for EIP150 gas cost changes
During the last couple of weeks, the Ethereum network has been the target of a sustained attack. The attacker(s) have been very crafty in locating vulnerabilities in the client implementations as well as the protocol specification. While the recent patches have led to an overall increased resiliency in the...
Published on: October 13, 2016 | Source:Issue 271
What happened with Dash? The most amazing demo of Swift Playgrounds you'll see and how do you avoid overusing boxes and lines in designs?
Published on: October 07, 2016 | Source:Issue 270
iOS 10 adoption almost at 50%. Search ads are now available and tips on writing Swift scripts.
Published on: September 30, 2016 | Source:Issue 269
Remove certificates from your APNS implementation! Tips for the Xcode memory graph debugger and should you be using Swift access control modifiers?
Published on: September 23, 2016 | Source:Transaction spam attack: Next Steps
Today the network was attacked by a transaction spam attack that repeatedly called the EXTCODESIZE opcode (see trace sample here), thereby creating blocks that take up to 20-60 seconds to validate due to the 50,000 disk fetches needed to process the transaction. The result of this was a ~2-3x reduction...
Published on: September 22, 2016 | Source:The Ethereum network is currently undergoing a DoS attack
URGENT ALL MINERS: The network is under attack. The attack is a computational DDoS, ie. miners and nodes need to spend a very long time processing some blocks. This is due to the EXTCODESIZE opcode, which has a fairly low gasprice but which requires nodes to read state information from...
Published on: September 22, 2016 | Source:Security alert - All geth nodes crash due to an out of memory bug
Security Alert Affected configurations: Geth Likelihood: High Severity: High Summary: geth nodes running out of memory and crashing on block https://etherchain.org/block/2283416 Details: TBD Solution: [Geth 1.4.12](http...
Published on: September 18, 2016 | Source:Issue 268
The App Store clean up has started. Building your apps to make extensions easier and initial thoughts on the iMessage store.
Published on: September 16, 2016 | Source:Issue 267
Submissions for iOS 10 are open! Auto generate documentation comments in Xcode 8 and answering the ultimate question... Spaces or tabs?
Published on: September 09, 2016 | Source:Issue 266
Apple are going to clean up the App Store! Getting ready for ATS and get the most out of the Swift API design guidelines.
Published on: September 02, 2016 | Source:Dev Update: Formal Methods
Today, I am delighted to announce that Yoichi Hirai (pirapira on github) is joining the Ethereum project as a formal verification engineer. He holds a PhD from the University of Tokyo on the topic of formalizing communicating parallel processes and created formal verification tools for Ethereum in his spare time....
Published on: September 01, 2016 | Source:Issue 265
Back to Friday we go! How to effectively write concise marketing copy and how is the Swift Package Manager doing?
Published on: August 26, 2016 | Source:Issue 264
Are you bored of fixing Swift 3 syntax changes yet? Allow your users to easily create NSPredicates and how about a new font for this Thursday?
Published on: August 18, 2016 | Source:Issue 263
Interface Builder is going to leave your opened documents alone! Table views two ways and a brand new media manager in iTunes Connect
Published on: August 11, 2016 | Source:Issue 262
How to display the perfect profile picture in your app. Why do we really see "Bug fixes" in release notes and find some new iOS developer podcasts.
Published on: August 05, 2016 | Source:Issue 261
Migrating your code to Swift 3. TestFlight is ready for your iMessage apps and extending the new measurements and units API.
Published on: July 29, 2016 | Source:On Inflation, Transaction Fees and Cryptocurrency Monetary Policy
The primary expense that must be paid by a blockchain is that of security. The blockchain must pay miners or validators to economically participate in its consensus protocol, whether proof of work or proof of stake, and this inevitably incurs some cost. There are two ways to pay for this...
Published on: July 27, 2016 | Source:Onward from the Hard Fork
The foundation has committed to support the community consensus on the admittedly difficult hard fork decision. Seeing the results of various metrics, including carbonvote, dapp and ecosystem infrastructure adoption, this means that we will focus our resources and attention on the chain which is now called ETH (ie. the fork...
Published on: July 26, 2016 | Source:Hive: How we strived for a clean fork
The DAO soft-fork attempt was difficult. Not only did it turn out that we underestimated the side effects on the consensus protocol (i.e. DoS vulnerability), but we also managed to introduce a data race into the rushed implementation that was a ticking time bomb. It was not ideal, and even...
Published on: July 22, 2016 | Source:Issue 260
Final by default? Or not? Designing a walkthrough that your users will find useful and can you work around the limitations of the Siri API?
Published on: July 22, 2016 | Source:Hard Fork Completed
We would like to congratulate the Ethereum community on a successfully completed hard fork. Block 1920000 contained the execution of an irregular state change which transferred ~12 million ETH from the "Dark DAO" and "Whitehat DAO" contracts into the WithdrawDAO recovery contract. The fork itself took place smoothly, with roughly...
Published on: July 20, 2016 | Source:To fork or not to fork
The DAO, though not a product developed by the Ethereum Foundation, has been a hot topic as of late, both internally in the organisation as well as within our community.The Hard Fork is a delicate topic and the way we see it, no decision is the right one. As this...
Published on: July 15, 2016 | Source:Issue 259
Is Swift adoption rising in larger and more popular apps? It appears to be!
Published on: July 15, 2016 | Source:How to build server less applications for Mist
Ethereum is not meant to be a platform to build esoteric smart contract applications that require a STEM degree to understand, but it aims to be one pillar of a different architecture for applications on the world wide web. With this post we will try to elucidate how this can...
Published on: July 12, 2016 | Source:Taylorβs Summer Update
Hey everyone, I spent some time with our Canadian friends in Toronto after presenting "Ethereum: The World Computer" at Blockchain Training Conference last month and I wanted to provide a quick update on some of the exciting happenings in the Ethereum dev ecosystem. Lots of things are brewing behinds the...
Published on: July 11, 2016 | Source:C++ DEV Update - July edition
Since the last C++ DEV Update, a lot of things happened in the engine room which were not really visible to the outside. This post wants to give an overview about what we are currently working on. Apart from the features side, Bob has been working on a proposed...
Published on: July 08, 2016 | Source:The Devcon2 site is now live!
The Devcon2 web site is officially live now! You can find it athttps://ethereumfoundation.org/devcon/ Thanks foreveryone's interest, proposals, support and enthusiasm. We have an amazing community and areexcited to present the first Ethereum Foundation event in Asia. This year, Devcon2 (September 19, 20, 21) will be a featured conference...
Published on: July 08, 2016 | Source:Issue 258
All the beta 2 bits! Playground support for minor Swift versions and a new alternative to Auto Layout if you need more speed!
Published on: July 08, 2016 | Source: