„Durch das Spardiktat hat sich die griechische Krise weiter verschärft. Der Schuldenstand ist seit 2010 von 143 % auf 153 % des BIP gewachsen statt zu sinken. Krankenhäuser und Schulen schließen, immer mehr Menschen sind auf Lebensmittelhilfen angewiesen. Erstmals seit 1945 kehrt der Hunger ins Land zurück. Spätestens jetzt sei klar, so Harald Schumann, dass es unmöglich ist, sich aus einer solchen Krise herauszusparen. Die Griechenlandpolitik, wie sie die Regierung Merkel betreibt, sei daher unverantwortlich. Einseitige Schuldzuschreibungen an Griechenland seien zudem unangebracht. Deutsche Unternehmen hätten jahrelang an Griechenland massiv verdient, sowohl durch fragwürdige Waffenlieferungen in Milliardenhöhe als auch durch Korruption, wie der Fall Siemens zeigt. Ein Herausdrängen Griechenlands aus der Eurozone hätte katastrophale Folgen für die Griechen.“

“Boot to Gecko aims to create a complete, standalone operating system for the open web.”

“This module implements the Blowfish-based Unix crypt() password hashing algorithm, known as “bcrypt”. This hash uses a variant of Blowfish, known as “Eksblowfish”, modified to have particularly expensive key scheduling. Eksblowfish and bcrypt were devised by Niels Provos and David Mazieres for OpenBSD. The design is described in a paper at http://www.usenix.org/events/usenix99/provos.html.”

“The socialbookmarkosphere is abuzz with talk of “rainbow tables”, what they mean for password security, and why they prove that Microsoft did a shoddy job of securing Windows for Workgroups 15 years ago. This really freaks me out. If the “advanced” pole of your threat model is “rainbow tables”, stop working on your social shopping cart calendar application right now: I can’t trust you with my Reddit karma score, let alone my credit card number.”

“This page contains links to Podcasts of readings of Latin and (ancient) Greek texts. Although many have been produced under the auspices of Haverford College, those recorded and placed in the public domain by others are also listed. If you would like to have your Classics Podcast listed here, please email bmulliga[at]haverford[dot]edu.”

“Linux system administrators often receive complaints about the performance of their systems. It can be rather difficult to track down these problems and to find why, when, and how often they happen. Being able to zoom in on the processes that are responsible, and to see what has happened in the past, is very valuable. The atop utility was written with just these things in mind.”

“Use bcrypt.”

“Functional Java is an open source library that seeks to improve the experience of using the Java programming language in a production environment. The library implements several advanced programming concepts that assist in achieving composition-oriented development. Functional Java is written using vanilla Java 1.5 syntax and requires no external supporting libraries. The JAR file will work with your Java 1.5 project without any additional effort.”

“Sim Daltonism is a color blindness simulator for Mac OS X. It filters in real-time the area around the mouse pointer and displays the result ” as seen by a color blind person ” in a floating palette.

“Since there are many types of color blindness, Sim Daltonism allow you to choose the one you want to see.”

„Wenn man die Rhetorik vieler Schweizer Lokalpolitiker hört, dann gehört die Warnung vor sozialistischen oder gar kommunistischen Umtrieben seit Jahrzehnten zum politischen Inventar der bürgerlichen Parteien. Dabei ist bereits das Prinzip der Eidgenossenschaft selbst das wohl sozialistischste Regierungs- und Politikmodell aller Staaten: In einer direkten Demokratie sind Volksabstimmungen erlaubt. Jeder Bürger darf kandidieren. Die meisten Kandidaten für politische Ämter stammen deshalb aus dem Volk, nicht aus Parteikadern. Im Bundesrat regieren die Parteien zusammen, nicht gegeneinander.“

“As I’ve discussed previously, there are a number of good reasons why Haskell is not suitable for teaching introductory functional programming. Chief among these is laziness, which in the context of a pure functional language has fatal side effects. First, Haskell suffers from a paucity of types. It is not possible in Haskell to define the type of natural numbers, nor the type of lists of natural numbers (or lists of anything else), nor any other inductive type! (In Carollian style there are types called naturals and lists, but that’s only what they’re called, it’s not what they are.) Second, the language has a problematic cost model. It is monumentally difficult to reason about the time, and especially space, usage of a Haskell program. Worse, parallelism arises naturally in an eager, not a lazy, language—for example, computing every element of a finite sequence is fundamental to parallel computing, yet is not compatible with the ideology of laziness, which specifies that we should only compute those elements that are required later.

“The arguments in favor of laziness never seem convincing to me. One claim is that the equational theory of lazy programs is said to be more convenient; for example, beta reduction holds without restriction. But this is significant only insofar as you ignore the other types in the language. As Andrzej Filinski pointed out decades ago, whereas lazy languages have products, but not sums, eager languages have sums, but not products. Take your pick. Similarly, where lazy languages rely on strictness conditions, eager languages rely on totality conditions. The costs and benefits are dual, and there seems to be no reason to insist a priori on one set of equations as being more important than the other.”

“Aleph is a Clojure framework for asynchronous communication, built on top of Netty and Lamina.

“What is Aleph good for?

“Aleph allows the creation of both clients and servers that can communicate using an array of protocols (HTTP, WebSockets, TCP, UDP, and others), and represents that communication via a single abstraction, channels. Thanks to the underlying libraries and the event-driven approach to communication, these clients and servers can be highly scalable.”

A port of ABCL to .NET.

“In this paper we present Dedalus, a foundation language for programming and reasoning about distributed systems. Dedalus reduces to a subset of Datalog with negation, aggregate functions, successor and choice, and admits an explicit representation of time into the logic language. We show that Dedalus provides a declarative foundation for the two signature features of distributed systems: mutable state, and asynchronous processing and communication. Given these two features, we address three important properties of programs in a domain-specific manner: a notion of safety appropriate to non-terminating computations, stratified monotonic reasoning with negation over time, and efficient evaluation over time via a simple execution strategy. We also provide conservative syntactic checks for our temporal notions of safety and stratification. Our experience implementing full-featured systems in variants of Datalog suggests that Dedalus is well-suited to the specification of rich distributed services and protocols, and provides both cleaner semantics and richer tests of correctness.”

“Apache ZooKeeper is an effort to develop and maintain an open-source server which enables highly reliable distributed coordination.”

What is ZooKeeper?

“ZooKeeper is a centralized service for maintaining configuration information, naming, providing distributed synchronization, and providing group services. All of these kinds of services are used in some form or another by distributed applications. Each time they are implemented there is a lot of work that goes into fixing the bugs and race conditions that are inevitable. Because of the difficulty of implementing these kinds of services, applications initially usually skimp on them ,which make them brittle in the presence of change and difficult to manage. Even when done correctly, different implementations of these services lead to management complexity when the applications are deployed.”

“Avout brings Clojure’s in-memory model of state to distributed application development by providing a distributed implementation of Clojure’s Multiversion Concurrency Control (MVCC) STM along with distributable, durable, and extendable versions of Clojure’s Atom and Ref concurrency primitives.”

“parboiled is a mixed Java/Scala library providing for lightweight and easy-to-use, yet powerful and elegant parsing of arbitrary input text based on Parsing expression grammars (PEGs). PEGs are an alternative to context free grammars (CFGs) for formally specifying syntax, they make a good replacement for regular expressions and generally have quite a few advantages over the “traditional” way of building parsers via CFGs.”

“pegdown is a pure Java library for clean and lightweight Markdown processing. It’s implementation is based on a parboiled PEG parser and is therefore rather easy to understand and extend.

“pegdown is nearly 100% compatible with the original Markdown specification and fully passes the original Markdown test suite. On top of the standard Markdown feature set pegdown implements a number of extensions similar to what other popular Markdown processors offer.”

“I’m making available this XSLT stylesheet to transform XHTML into Markdown-formatted text, under a Creative Commons license.”

“Frinj is a practical unit-of-measure calculator DSL for Clojure.

“Key features:

• Tracks units of measure through all calculations allowing you to mix units of measure transparently
• Comes with a huge database of units and conversion factors
• Inspired by the Frink project (http://futureboy.us/frinkdocs/)
• Tries to combine Frink’s fluent calculation style with idiomatic Clojure”

THE best Latin-English dictionary in the world, available as a web app, including all of its command-line version’s deinflecting awesomeness.

“A multicast address identifies multiple interfaces, and is used for one-to-many communication. With the appropriate multicast routing topology, packets addressed to a multicast address are delivered to all interfaces that are identified by the address.

“IPv6 multicast addresses have the Format Prefix of 1111 1111. An IPv6 address is simple to classify as multicast because it always begins with FF. Multicast addresses cannot be used as source addresses.

“Multicast addresses include additional structure to identify their flags, scope, and multicast group, as shown in the following illustration.”

Artikel vom 28. April 2000 über Gauck und die Stasi.

Via Fefe https://blog.fefe.de/?ts=b1bc4ba9.