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#General #Development #Mobile Development #Cloud & DevOps #Cybersecurity & Privacy #AI & Data Science #Hardware & Gadgets #Design & UXEthereum Research Update
This week marks the completionof our fourth hard fork, Spurious Dragon,and the subsequent state clearing process, the final steps in the two-hard-fork solution to the recent Ethereum denial of service attacks that slowed down the network in September and October. Gas limits are in the proce...
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Issue 279
Refactor your Swift code? Finally! Will we see async/await in Swift? and how to get paid!
Security alert [11/24/2016]: Consensus bug in geth v1.4.19 and v1.5.2
Security Alert Affected configurations: Geth Severity: High Summary: An issue has been identified with Geth's journaling mechanism. This caused a network fork at block #2686351 (Nov-24-2016 14:12:07 UTC). The...
Issue 278
Bring After Effects animations into your apps. Converting Objective-C to Swift, gradually and which modal style should you use?
Hard Fork No. 4: Spurious Dragon
The Ethereum network will be undergoing a hard fork at block number 2,675,000, which will likely occur between 15:00 and 16:00 UTC on Tuesday, November 22, 2016. A countdown timer can be seen at https://fork.codetract.io/. The Morden test network will be undergoing a hard fork at block number 1,885,000....
Issue 277
The App Store clean up has started! Better beta diffs on the Apple documentation site and do you want to build Zork in Swift?
Whoa… Geth 1.5
The Go Ethereum team isvery proud to finally release Geth 1.5, which can almost be called a complete internal rewrite of the Go Ethereum (go-ethereum) codebase. We've packed a huge number of changes into this release, and simply listingthem wouldn't do them justice. Instead, we've decided to write them...
Issue 276
Link directly to your tvOS apps, finally! Should Swift arrays be forced to always have content? and how to easily do TDD in Swift Playgrounds.
Analysis of Storage Corruption Bug
This blog post providesan update onour findings following the discovery of the storage corruption bug last week. Insummary, the bugwasmuch less severe than we initially thought. The small number of affected contracts we found is either only exploitable by the owner, or the exploit can only cause a disruption in...
Issue 275
Say goodbye to Swift 2.x soon. How to deploy your Vapor apps to the web and a new Markdown parser in Swift.
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...
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...
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.
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...
Issue 273
CocoaPods 1.1 released. Speed up your simulator builds and taming the NSTimer API
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/....
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.
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...
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?
Issue 270
iOS 10 adoption almost at 50%. Search ads are now available and tips on writing Swift scripts.
Issue 269
Remove certificates from your APNS implementation! Tips for the Xcode memory graph debugger and should you be using Swift access control modifiers?
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...
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...
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...
Issue 268
The App Store clean up has started. Building your apps to make extensions easier and initial thoughts on the iMessage store.
Issue 267
Submissions for iOS 10 are open! Auto generate documentation comments in Xcode 8 and answering the ultimate question... Spaces or tabs?
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.
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....
Issue 265
Back to Friday we go! How to effectively write concise marketing copy and how is the Swift Package Manager doing?
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?
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
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.
Issue 261
Migrating your code to Swift 3. TestFlight is ready for your iMessage apps and extending the new measurements and units API.
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...