erlang vs elixir

Reprint: http://agileprogrammer.blogspot.com/2006/08/erlang-abstract-form-moduleform.html We will examine the composition of the Erlang Abstract form in detail. The method is simple, refer to the Abstract form section of the ERALNG document and validate it with practical examples.Abstract FormIn the Abstract form document, a function rep is used to represent a mapping from the

1. Erl-detached This document describes the applicability of daemons and background programs. It also applies when node is dynamically pulled in the Code. Otherwise, the problem of terminate Erlang will be reported. 2 init stop Can terminate the VM, combined with RPC: Call can end the specified Node 3. control common test in code CT: Install specifies the config file, CT: start_interactive (). This is very important. It specifies the interaction mode.

As mentioned above, the smerl in erlyweb already has a ruby-like tuples for programming. This article will introduce the basic principle of implementing tuples for programming. In smerl, the abstract form of Erlang is mainly used for implementation. We will examine the composition of Erlang abstract form in detail. The method is very simple. Refer to the abstract form section in the eralng document and use

Reprinted: http://mryufeng.iteye.com/blog/113856 ETS is Erlang term strorage meaning document see erl5.5.5/lib/stdlib-1.14.5/doc/html/index.html. This is a core function in beam. ETS, dets, and mnesia constitute the Erlang database. Note that mnesia has no storage mechanism.Its storage is ETS and dets.You can use ETS: I ().11 code set 254 11393 code_server12 code_names set 48 5323 code_server13 shell_recor

Summary: The features of Erlang are almost different from those of Erlang... Variable immutable: Guarantees atomicity and prepares for parallelism. Tuples: Similar to the structure in C language. Person = {person, {name,joe}, {height,1.82}. }. List: [H | T]. The list starts with H and ends with T. The vertical line symbol (|) can separate the header and tail of the list, while [] is an empty li

A simple Erlang process pool Analysis This is a simple Erlang process pool analysis, which islearn you some erlang for Great GoodHere is an example. For details, go to the official website!Main Flowchart Implementation Principle The implementation principles of this example are described in detail on the official website.ppool_servMedium,ppool_servIsgen_server be

-Cause In the last group of services recently, the CPU usage of some node servers is very low, with only 1/4 of other servers. Eliminate service imbalance and suspected it was a system top statistics error. We found it through Erlang: Statistics (scheduler_wall_time) from the Utilization Survey of Erlang scheduler) check that the actual CPU usage of the machine scheduler with low server CPU is close to 100%

send(S, Data, OptList) when is_port(S), is_list(OptList) -> 2 ?DBG_FORMAT("prim_inet:send(~p, ~p)~n", [S,Data]), 3 try erlang:port_command(S, Data, OptList) of 4 false -> % Port busy and nosuspend option passed 5 ?DBG_FORMAT("prim_inet:send() -> {error,busy}~n", []), 6 {error,busy}; 7 true -> 8 receive 9 {inet_reply,S,Status} ->10 ?DBG_FORMAT("prim_inet:send() -> ~p~n", [Status]),11 Status12 end13 catch14 er

[Erlang crisis] (1.3) OTP application, erlangotp1. OTP Applications Figuring out OTP applications is usually rather simple. They usually all share a directory structure that looks like: It is usually very simple for developers to figure out OTP applications. They are usually in the same directory and the target structure is as follows: doc/;ebin/src/test/LICENSE.txtREADME.mdrebar.configThere might be slight differences, but the general structure wi

I have previously reposted an article about common Emacs shortcut keys: Http://blog.romebuilder.com/2011/11/534/ The following describes how to add the preceding shortcut keys and the Erlang shortcut keys:Common shortcut key supplement C-x d directory management interface, which can be used to open files in different directories C-x C-Q enables the Directory management interface to enter the Editable mode. In this mode, you can modify the file nam

Preface Hope it is not a pitfall. We plan to adopt a structured latency strategy, which will be written before the dead line (July is the planned Erlang month. Perfect plan The advantages or interesting aspects of Erlang over Java are as follows: imperative language v. S. Functional language, thread abstraction and architecture, and distributed programming support. Cruel and ugly practices Example 1 fast

Reprinted: http://blog.csdn.net/cuiweican/archive/2010/07/14/5735476.aspx The Erlang/OTP's global module can be used to name the processes in the Erlang distributed system in the form of atoms to ensure that each process in the distributed system has a unique name at the same time. Now let's take a look at the performance of the global module in actual operations. register the same name in two

When talking about the SIP Protocol, many people first think of the VoIP service. So what else is there? Today we will introduce another embodiment of the SIP business-Erlang project called yxa official website http://www.stacken.kth.se/project/yxa/), can be said to be the Erlang on the SIP protocol stack and server implementation. In addition to the basic SIP service package release, transfer layer, and Tr

A record is actually another form of a tuple. By using records, you can associate a name for each element in a tuple.A mapping group is a collection of associations of key-value pairs. The key can be any of the Erlang data types.When to use a mapping group or recordRecords are another form of tuples, so they are stored in the same way as performance characteristics and tuples. The mapping group takes up more storage space than the tuple, and it looks

There are two models of Erlang distributed programmingFirst, distributed ErlangRunning in a trusted network environment1. Remote procedure call provided by RPCRpc:call (Node,mode,fun,args)->result| {Badrpc,reason}2. Functions in global can be used to register names and locks in distributed systems, and to maintain a fully connected networkSpawn (Node,fun), PidSpawn (Node,mode,fun,args)->pidSpawn_link (Node,fun), PidSpawn_link (Node,mode,fun,args)->pid