erlang graph

Here is a few resources:Programming Erlang, by Joe Armstrong. A Good book, really teaching-the fundamentals of Erlang and hot the abstractions is built. Some people found it a bit dry and hard to follow. Joe Armstrong is the original creator of Erlang, along with Robert virding and Mike WilliamsErlang in practice, screencasts by Kevin Smith. He starts from scratc

original articles, reproduced please specify the Source: Server non-amateur research http://blog.csdn.net/erlib author SunfaceContact e-mail: [Email protected]SSH DaemonERLANG/OTP comes shipped with an SSH implementation that can both act as a server and a client. Part of it was a demo application providing a remote shell working in ERLANG.to get the usually need to has your keys to has access to SSH stuff remotely on place already, but for Qu Ick test purposes, you can get the things working by

(Sasl,system Administration Support libriaries) will be responsible for error logging and overload protection. Using Gen_server, gen_supervisor,application and other behaviors, you can build a system with a reliability of 99.9999999. Unified Erlang Message: 1 abstract The difference between the different line protocols2 Erlang message without parsing, the receiving process does not need to resolve the m

One: Variable 1. The variable "single assignment" in Erlang means that the variable can only be assigned one time.2. Variables must begin with a "capital letter". Two: Atoms An atom is equivalent to an enumeration type in C + +, but the value of an atom in Erlang is itself. Atoms are a string that starts with "lowercase letters," but if you use single quotes, the name of the atom doesn't matter, and a l

An experiment was conducted in windows. Erlang shell is used to create 0.6 million Erlang processes, occupying more than 760 MB of memory. On average, each process occupies 1.27 KB of memory and the creation time of each process is about 4 microseconds. On a Linux server with much better configuration, use pthread to start a thread. The average creation time of each thread is 48 microseconds. Check the info

Erlang itself provides an interface that can be used to check whether the module has an export function. This interface is Erlang: function_exported/3, but this interface is often unavailable. The problem is reproduced below: 1> erlang:function_exported(crypto,start,0).false2> crypto:start().ok3> erlang:function_exported(crypto,start,0).trueNote: The example does not mean that you must crypto: Start () to u

* Make sure there are no compilation warnings * In Erlang, string is implemented by list. In 32-bit systems, the space of one character is 8 bytes (four values are saved and four pointer values are saved ). Therefore, the string speed is slow and the space usage is large. * On the server, you always try your best to write tail-recursive functions. * When '+ +' is used, the left list will be copied and added to the right list header. Therefore, it is b

http://blog.chinaunix.net/xmlrpc.php?r=blog/articleuid=25876834id=3300393Because in my work, the server Erlang and the client flash communication is to send binary data (protocol) to communicate, Erlang processing binary data is really convenient, in the free time to view and translate Erlang binary related to some of the documentation, There are, of course, plac

Citation: http://cryolite.iteye.com/blog/15472521. Binary data can be shared between different processesOf course, these processes are all on the same Erlang node.This is different from ordinary term, which is to be copied in the receiving process as the message passes between processes (of course atom data exceptions, they are not copied). Pick a piece of text here:All data in messages between Erlang proce

One, assignment time matching Atom Match Copy Code code as follows: Atom = Atom% atom Another = another% another Atom = another% exception error variable Matching Copy Code code as follows: Var = 2. % 2 Var = 3-1. % 2 Var = 1. % exception Error tuple Match Copy Code code as follows: Attr = {name, Sloger}. % {name, sloger} {name, name} = Attr. % {name, sloger} Name. % Sloger List Matching Copy Code code as

1. ETS and Dets Introduction: ETS (Erlang term Storage) and Dets (Dist ETS) are system modules that Erlang uses to efficiently store large numbers of Erlang data entries. ETS vs. Dets: Same: Both ETS and Dets provide large "key-value" search tables. Different: ETS resides in memory and Dets resides on the hard disk. The ETS storage is temporary and the data store

Beginner Erlang, when compiling the. erl file, Tip: >1 C (some_module) ./some_module.erl:none:no such file or directory Error This is because the. erl file is not being caused in the current working directory of Erlang. Enter the following function in the Erlang shell to get the current working directory: >1 pwd (). You can switch the working directory usin

When you deploy an Erlang project under Linux, many of the development processes are done in Windows and then released to Linux, so the testing process is done under the virtual machine. One day, because you want to use Erlang graphical tools such as APPMON, TV, observer, and so on in a virtual machine, it's a whim to use the Windows Erlang connection to a virtua

First, Erlang syntax: variables, pattern matching--------------------------------------1.ELR Command: Toolbar Toolbar:start ().2.% ... Comments3. Capitalize the variable first letter, single assignment4. Pattern matching5. Atom: Hello, ' an atom with '6. Tuple tuples: tuple nested {person,{a,1},{b,2}}Extract the tuple field value point = {point, ten, +} {point, X, Y} = Point7 list: definition list ThingsToBuy1 = [{oranges,4}, {newspaper,1}|{ Thingstob

In [Erlang 0009] Erlang 30th, I mentioned a small trap about the if statement: 30. If statements will catch the guard clause, so if 1/0-> A; true-> B end. Returns B rather than throwing an exception. Don't believe it? Open Erlang shell and drill down to see: Eshell V5.9 (abort with ^G)1> F = fun(X) -> if 1/0 -> a; true -> b end end.#Fun2> F(1).b3> G=1/0 , if

These days, I have been pondering how to convert the simplified Chinese characters of Erlang to Unicode. I have thought of using external modules such as port, C, and python. Using ERTs, dict, and array is not only too cumbersome, but even hard to understand. Two major issues to be considered in programming: Functions and efficiency. Efficiency: not only the program running efficiency, but also the programming efficiency. The simpler the code, the hig

Basic concurrency Functions in Erlang 1) Pid =spwan (Mod,func,args) creates a new process to perform the Apply (Mod,func,args) and runs in parallel with the calling process, using the latest code definition module.2) pid! Message sends message,! to PID process asynchronously For the Send operator3 Receiving ... end receive message Copy Code code as follows: Receive Pattern1[when guard1]-> Expression1; pattern2[whenguard2]->expressi