erlang graph

Erlang has three ways to produce a random numberRandom:uniform ().This function is provided by the Erlang Library random module. This is generally used.1> Random:uniform (). 0.4435846174457203Erlang:now ().Use the current time as a random believe a lot of people have done it. So if you don't have a lot of demands, you can do the same.1> Erlang:now (). { 1419,831449,715000}Crypto:strong_rand_bytes (N).The cr

Someone in the group asked me that the long data in shell was omitted as [...] |...], how to view the omitted part is the problem encountered when calling OS: getenv (). We have encountered similar problems before, such as string: tokens (binary_to_list (Erlang: system_info (Info), "\ n "). Eshell V5.9 (abort with ^G)1> string:tokens( binary_to_list(erlang:system_info(info)),"\n").["=memory","total: 4331920","processes: 438877","processes_used: 4388

1.application definition . Illustration: Mnesia, cowboy, Mochiweb ... is a application. does not affect each other in Erlang, which causes a process to crash and B processes that do not rely on the a process to function properly. And since Erlang's mechanism causes it to know the a process crashes, then if you can restart the A-process, then this system: I tell you, it's a perpetual system, "Who's so wasted that they don't have electricity at night"

Baidu Cloud Push official address Http://developer.baidu.com/wiki/index.php?title=docs/cplat/pushSimple introduction to the following principle:Baidu Cloud push support for iOS and Android cloud push. Android support is good, but iOS is generally hard to get through. Baidu Cloud for iOS push, he just did an intermediary agent, to provide users with interface, the advantage is the use of Baidu Cloud push, Android and iOS can be unified management; The disadvantage is: it is not easy to pass, the

) Throw New Argumentnullexception ( " Dict " ); VaR NL = encoding. utf8.getbytes ( " \ R \ n " ); VaR MS = New Memorystream (); Foreach ( VaR Key In Dict. Keys){ VaR Val = dict [Key]; VaR Klength = encoding. utf8.getbytes ( " $ " + Key. Length + " \ R \ n " ); VaR K = encoding. utf8.getbytes (Key + " \ R \ n " ); VaR Vlength = encoding. utf8.getbytes ( " $ " + Val. Length + " \ R \ n " );Ms. Write (klength, 0 , Klength. Length );Ms. Write (K, 0 , K. Length );Ms. Write (vlength,

Erlang has provided a series of tools to view the running status. Is there any Web monitoring tool available? The following describes a great tool: BigwigIt provides SASL log view, OTP process tree topology, process view (sorted by metric), Application Management, node performance sampling, process control, and other functions; this project is built on a successful open-source project: Web framework usage Cowboy, JSON Parsing Jsx; Use. /Rebar get-deps

],[1,2,3,4,5,6,7,8,9,10],[1,2,3,4,5,6,7,8,9,10],[1,2,3,4,5,6,7,8,9,10],[1,2,3,4,5,6,7,8,9,10]]ok6> erts_debug:size(L2).327> erts_debug:flat_size(L2).132 　　 When starting shell, the shell PID is Eshell V6.0 (abort with ^G)1> self(). 　　 Why does it trigger data expansion (expand, flattening? See the following code. When the shell is started, the variable that has been bound previously will be used as the spawn_link parameter to start the new shell. erl6.2\lib\stdlib-2.2\srcstart_eval(Bs, RT

In. net, we can use Attribute and reflection to parse Assembly metadata at runtime. Below is a simple example written by C: Worker1 worker1 = new Worker1 (); var attribute = worker1.GetType().GetCustomAttribute(typeof( ProcessOrderAttribute)) as ProcessOrderAttribute ; Console.WriteLine("Description {0} Order {1}" , attribute.Descrption, attribute.Order); Console.ReadLine();[ProcessOrder( " first step", 1)] public class Worker1 { }class ProcessOrderAttribute : Attribute { public st

Erlang entry: service process instance operations and exercises 3. erlang instance Example of banking services:Create user: bank_server: create_account (myname, 100 ).User saves money: myname! {Deposit, 10 }.User withdrawal: myname! {Cash1, 20 }.Myname! {Cash2, 30 }.Query balance: myname! Check.====================================== Example of game role usage:Create role: {OK, Pid} = game_server: create_p

Seven weeks and seven languages -- Erlang's second day and seven weeks of erlang's self-studyKey-value pairs Question: consider a list of key-value tuples, such as [{erlang, "a functinal language"}, {ruby, "an OO language"}]. Write a function that accepts the list and key as parameters and returns the value corresponding to the key. Get_value (Map, Key)-> element (2, hd (lists: dropwhile (fun ({K, _})-> Key/= K end, Map) ++ [{[], []}]). % ++ Concaten

request is loaded in a message and sent to the cast of gen_server. This calls free and returns OK. When gen_server receives the request, it calls handle_cast (request, stats) and returns a tuple {noreply, state1 }. State1 is a new value of gen_server status. handle_info(_Info, State) -> {noreply, State}. Used to process information other than the request. terminate(_Reason, _State) -> ok. Terminate a function to terminate a running process. If gen_server is part of a supervision

OS apns-apple Notification Server and third party provider the principle of communication online has been a lot of introduction, here no longer introduced, there is want to know everyone can go to the iOS website https://developer.apple.com/ library/ios/documentation/networkinginternet/conceptual/remotenotificationspg/chapters/applepushservice.html#/ /APPLE_REF/DOC/UID/TP40008194-CH100-SW1 learn to learn. Online about iOS APNs to implement very little, generally Java or PHP, there is a C + + imp

Comparison between Rust and Erlang During my two-year career as a telecommunications network simulator programmer, I fully utilized the concurrency, fault tolerance, and distributed computing features of Erlang to many CPU-intensive applications. Erlang is an advanced, dynamic, and functional language that Provides Lightweight processes, immutability, distributed

Graph Theory 3 bipartite graph matching, graph theory Bipartite Graph Matching You can learn http://www.renfei.org/blog/bipartite-matching.html here firstTemplate According to the above blog, the bipartite graph matching can be divided into four types Maximum number of match

As a programmer, we once heard a lot of "industry news" and "technological innovation", and once came into contact with many "Master sayings" and "authoritative recommendations ". These are correct or not! Now, let's welcome the Erlang feast!I. Experience When searching for code in koders.com on December 31, November 2007, we found *. the source file in ERL format is amazed at the variety of development languages. At this time, I think

Erlang can't miss the feast (Trot into Erlang's world) Author: Chenglitao (litaocheng@gmail.com) As programmers, we have hearing a lot of "industry dynamics", "technological innovation", once contacted a lot of "master motto", "authoritative recommendation." Whether these are correct or not is a past. Now, let's Meet the Erlang feast. First, Experience November 2007 in koders.com Search code, found in the

The feast that Erlang cannot miss(Trot into the world of Erlang)Chenglitao ([email protected])As programmers, we have upon hearing a lot of "industry dynamics", "technological innovation", has been exposed to a lot of "master Proverbs", "authoritative recommendations." These are right or not, have become the past!Now, let's Meet the Erlang feast!First, experience

Into the world of ErlangAs programmers, we have upon hearing a lot of "industry dynamics", "technological innovation", has been exposed to a lot of "master Proverbs", "authoritative recommendations." These are right or not, have become the past!Now, let's Meet the Erlang feast!ExperienceNovember 2007 in koders.com Search code, found the *.erl format of the source files, exclamation the development of the language of the pattern, at this time, I think

Getting Started with ErlangErlang is a great language this lets you build highly concurrent applications. This tutorial'll teach you what to quickly get started with it.In the section: Preliminary steps Installing Erlang OTP Windows OS X Linux Verifying Erlang OTP Installation Installing Rebar Setting up IntelliJ idea Confi

This is a creation in Article, where the information may have evolved or changed. Xu Xiwei: Let's start by introducing Ecug, starting in 07, the first in the Pearl River Delta Zhuhai, Guangzhou, Shenzhen, in the Pearl River Delta, the first is the community of Erlang. About 10 when the name changed to real aging cloud computing Group, the earliest time is not limited to Erlang, but there will be a variety o