I am trying to code Project Euler #3 in Erlang: The prime factors of 13195 are 5, 7, 13 and 29. What is the largest prime factor of the number 600851475143 ? Here is my code: -module(problem_3). -compile(export_all). start()-> problem_3(600851475143, 2). problem_3(Num, F) when Num > 1 -> case Num rem F of 0 -> problem_3(Num / F, F); 1 -> problem
我想在Erlang中编写Project Euler＃3： The prime factors of 13195 are 5, 7, 13 and 29. What is the largest prime factor of the number 600851475143 ? 这是我的代码： -module(problem_3). -compile(export_all). start()-> problem_3(600851475143, 2). problem_3(Num, F) when Num > 1 -> case Num rem F of 0 -> problem_3(Num / F, F); 1 -> problem_3(Num, F + 1
Hi I'd like to pick up one FP language (it's always a pain when you work in a position that does not require you learn much), and after doing some research, I felt Erlang and OCaml are the two that I'd really like to get my feet wet for the following reasons: 1) I work mainly on high-availability web server back-end system in C++. I heard Erlang is a great fix in scalability and fa
嗨，我想选择一种FP语言（当你在一个不需要你学习的职位上工作时总是很痛苦），并且在做了一些研究之后，我觉得Erlang和OCaml是我真的喜欢弄湿我的脚，原因如下： 1）我主要在C ++中使用高可用性Web服务器后端系统。 我听说Erlang在可扩展性和容错性方面是一个很好的解决方案。 虽然我不认为我现在的公司会在Erlang有任何项目，但我觉得Erlang可能是我长期职业发展的良好语言。 2）我有一个非常擅长OCaml的同事，我的意思
I'm using lager to do my logging; it has a parser transform which converts lager:warn/1 , etc. functions into lager:trace... functions. dialyzer doesn't process the parser transform, so it warns with Call to missing or unexported function lager:warn/1 . How do I tell it that this function does exist, and not to warn about it? 最好的办法是让dialyzer查看你的编译束文件，只要在编译代码
我正在使用啤酒做我的日志记录; 它有一个解析器转换，将lager:warn/1等函数转换为lager:trace...函数。 透析器不处理解析器转换，所以它会通过Call to missing or unexported function lager:warn/1 。 我如何告诉它这个函数确实存在，而不是警告它？ 最好的办法是让dialyzer查看你的编译束文件，只要在编译代码时应用解析变换，并且在你的.plt文件中包含lager就可以了 通过检查meck项目的Makefile中关于透析器的工作，找
Not at all familiar with Erlang, but am trying to interpret what this code does? Below is my understanding about the code. Any help will be useful. I am looking at the tutorials but the passing values are confusing in this case. example- convert_list_to_k([{Name, {l, Weight}} | Rest]) //{1,Weight} <- This one And how is the value returned in convert_list_to_k ? let's say for this
根本不熟悉Erlang，但我试图解释这段代码的作用？ 以下是我对代码的理解。 任何帮助都是有用的。 我在看教程，但传递的值在这种情况下令人困惑。 example_ convert_list_to_k([{Name, {l, Weight}} | Rest]) //{1,Weight} <- This one 那么在convert_list_to_k返回的值如何？ 让我们来说说这个功能块 convert_list_to_k([{Name, {l, Weight}} | Rest]) -> Converted_Object = {Name, {k, Weight / 0.4535923
There are differences in internal representation of the queues depending on: either it was created using queue:from_list() function or using queue:new() function and them populating with elements. Simple Code: L = [1,2,3], Q = queue:from_list(L), % convert it to Queue. L2 = queue:to_list(Q), % convert back to list. QL2 = queue:from_list(L2), % And create queue representation true = Q
队列的内部表示有所不同，具体取决于： 它是使用queue：from_list（）函数创建的 或者使用queue：new（）函数并使用它们填充元素。 简单代码： L = [1,2,3], Q = queue:from_list(L), % convert it to Queue. L2 = queue:to_list(Q), % convert back to list. QL2 = queue:from_list(L2), % And create queue representation true = Q =:= QL2. 到目前为止，一切都很好， Q看起来像： {[3]，[1,2]} QL2看起来
I'm following Programming in Erlang, Software for a concurrent world written by Joe Armstrong and I am trying to figure out what is asking me solve as an assignment at the end of the sequential chapter. Here is the assignment: Look up the definitions of erlang:now/0 erlang:date/0 and erlang:time/0 . Write a function called `my_time_func(F), which evaluates the fun F and times how long it
我正在使用Erlang编程，一个由Joe Armstrong编写的并发世界的软件，我试图找出在顺序章节末尾要求我解决什么问题。 这是作业： 查找erlang:now/0的定义erlang:now/0 erlang:date/0和erlang:time/0 。 编写一个名为`my_time_func（F）的函数，它可以评估有趣的F和时间，它需要多长时间。 我不明白这项任务要求我做什么。 你可以给我举例说明不同的论点或其他解释吗？ 它希望你编写一个函数来计算运行另一个函数需要多长时
What is the difference in ending a function with end and ok in Erlang? I've been trying to grasp the meaning in the following code: -module(esOne). -export([start/1, func/1]). start(Par) -> io:format("Client: I am ~p, spawned by the server: ~p~n",[self(),Par]), spawn(esOne, func, [self()]), Par ! {onPid, self()}, serverEsOne ! {onName, self()}, receiveMessage(),
在Erlang结束一个函数结束和确定的区别是什么？ 我一直在努力去掌握以下代码中的含义： -module(esOne). -export([start/1, func/1]). start(Par) -> io:format("Client: I am ~p, spawned by the server: ~p~n",[self(),Par]), spawn(esOne, func, [self()]), Par ! {onPid, self()}, serverEsOne ! {onName, self()}, receiveMessage(), ok. receiveMessage() -> receive {reply
I'd need an Erlang implementation of the OpenId protocol. I found the following, but it seems to be a project on its early stage. http://code.google.com/p/erlopenid/ Any hint or suggestion on what should I use? I finally found all the existing Erlang implementations for OpenID thanks to the following search engine for Erlang projects: http://projects.trapexit.org/web/ Here are the
我需要一个OpenId协议的Erlang实现。 我发现了以下内容，但它似乎是一个早期阶段的项目。 http://code.google.com/p/erlopenid/ 任何暗示或建议我应该使用什么？ 我终于找到了所有现有的用于OpenID的Erlang实现，这要感谢Erlang项目的以下搜索引擎： http://projects.trapexit.org/web/ 结果如下： http://github.com/etnt/eopenid http://github.com/brendonh/erl_openid http://github.com/pib/erlangopenid
I have gotten a good start on my program, my first REAL Erlang program. I have it listening for messages, reading them and parsing them. I also have it sending them. The one little thing that is bothering me is I can't SEND on Port 5353, I have tried everything. All the other applications on my machine can listen AND send on port 5353, SubEthaEdit, iTunes, iChat. The solution MUST broad
我的程序，我的第一个真正的Erlang程序已经获得了良好的开端。 我让它听取消息，阅读并解析它们。 我也有它发送。 困扰我的一件小事是我无法在端口5353上发送，我尝试了一切。 我的机器上的所有其他应用程序都可以侦听并发送端口5353，SubEthaEdit，iTunes，iChat。 该解决方案必须在端口5353上广播发送，这是原因。 “如果收到的组播DNS查询中的源UDP端口不是端口5353，则表示发起查询的客户端是一个简单的客户端，并未
I'm using Erlang/OTP 20 on macOS. Eshell prints multiple lines with heading "PROGRESS REPORT", I want it to not print that. Inverse grep ing and similar work around are not desirable. Here's a sample of statements getting printed: =PROGRESS REPORT==== 28-Aug-2017::22:39:40 === supervisor: {local,sasl_safe_sup} started: [{pid,<0.59.0>}, {id,alarm_handler}, {mfargs,{a
我在macOS上使用Erlang / OTP 20。 Eshell用标题“PROGRESS REPORT”打印多行，我希望它不打印。 反向grep ing和类似的工作是不可取的。 以下是获取打印的语句示例： =进度报告==== 2017年8月28日:: 22:39:40 ===主管：{本地，sasl_safe_sup}开始：[{pid，<0.59.0>}，{id，alarm_handler}，{mfargs ，{alarm_handler，start_link，[]}}，{restart_type，permanent}，{shutdown，2000}，{child_type，worker}] =进度