I returned to Haskell for my personal projects from Erlang for the simple virtue of Haskell’s amazing type system. Erlang gives you a ton of tools to handle when things go wrong. Haskell gives you tools to keep you from going wrong in the first place. When working in a language with a strong type … Read more
I’m a month-or-so into learning and the guides I’m enjoying most are: The Erlang Site’s Getting Started with Erlang Guide Joe Armstrong’s Book Software for a Concurrent World (thoroughly recommended) And I have on order: O’Reilly’s Erlang Programming which has had some really positive reviews and sounds like a good companion to Joe Armstrong’s book … Read more
Printed process ids < A.B.C > are composed of 6: A, the node number (0 is the local node, an arbitrary number for a remote node) B, the first 15 bits of the process number (an index into the process table) 7 C, bits 16-18 of the process number (the same process number as B) … Read more
The C++ code does not deal with fairness, isolation, fault detection or distribution which are all things which Erlang brings as part of its actor model. No actor is allowed to starve any other actor (fairness) If one actor crashes, it should only affect that actor (isolation) If one actor crashes, other actors should be … Read more
Erlang plugin for IntelliJ IDEA provides some features for Erlang code editing and navigation: Syntax and errors highlighting References resolving Code completion for functions, records, variables, macroses and keywords Rename refactoring for modules, functions, records, macroses and variables Safe delete refactoring Structure view and Find usages Code formatter Compilation and running Eunit test runner Dialyzer … Read more
I would give Erlang a try. Even though it will be a steeper learning curve, you will get more out of it since you will be learning a functional programming language. Also, since Erlang is specifically designed to create reliable, highly concurrent systems, you will learn plenty about creating highly scalable services at the same … Read more
Right now there are mainly two practical Haskell libraries out there for functional reactive programming. Both are maintained by single persons, but are receiving code contributions from other Haskell programmers as well: Netwire focusses on efficiency, flexibility and predictability. It has its own event paradigm and can be used in areas where traditional FRP does … Read more
A functional language doesn’t (in general) rely on mutating a variable. Because of this, we don’t have to protect the “shared state” of a variable, because the value is fixed. This in turn avoids the majority of the hoop jumping that traditional languages have to go through to implement an algorithm across processors or machines. … Read more
Disclaimer: I am the PO for Akka Erlang does copy-on-send – Akka uses shared memory (immutable objects) for in-VM sends Erlang does per-process GC – Akka uses JVM GCs Erlang has OTP – Akka integrates with the entire Java ecosystem (Apache Camel, JAX-RS, etc etc) Erlang does the process scheduling for you – Akka allows … Read more
The reliability figure wasn’t supposed to measure the total time any part of AXD301 (project in question) was ever shut down for over 20 years. It represents the total time over those 20 years that the service provided by the AXD301 system was ever offline. Subtle difference. As Joe Armstrong says here: The AXD301 has … Read more