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全部话题 - 话题: erlang
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k*z
发帖数: 4704
1
来自主题: Statistics版 - 牛牛 Xie Liang关于 Erlang C的Model应用
http://saslist.com/blog/2012/07/13/sas-functions-for-computing-
http://listserv.uga.edu/cgi-bin/wa?A2=ind1210c&L=sas-l&F=&S=&P=
SAS functions for computing parameters in Erlang-C model
Call center management is both Arts and Sciences. While driving moral and
setting up strategies is more about Arts, staffing and servicing level
configuration based on call load is in the domain of Sciences.
The science part of call center management is based on Queueing Theory,
which studies "the Phenomena of sta... 阅读全帖
d*******r
发帖数: 3299
2
来自主题: Programming版 - erlang系的东西从来都以量大著称
Erlang感觉一直就很吊,唯一一个非 C 系 (OS都可以独立于 *nix存在的),并且有很
多成功系统和轮子的语言。
我记得之前还板上还有人拿 Go 比较 Erlang 呢,不知道现在怎么看.
c*******0
发帖数: 5247
3
来自主题: Programming版 - erlang系的东西从来都以量大著称
I think go will be more popular than Erlang in corporation in five years.
For now go's open source community is already more active than Erlang.
c***d
发帖数: 996
4
我不是大牛。 erlang 07年左右在yahoo流行了一阵,。后来用erlang的内部group认为
第一, 语言的开发友好比并发性能重要多了, 第二,并发性和throughput是两回事,
和latency的关系也不大。
rick reed本来是做bsd上apache优化的, 碰应用不多. brian acton是真牛人, 在几
个大组都是担纲的。其实这种东西低层都差不多, 直接用c++ kqueue写出来性能也不
会差, 不过没那么唬人罢了。
M******1
发帖数: 90
5
来自主题: JobHunting版 - fb的chat现在还用erlang么?
fb的chat现在还用erlang么?
g*****e
发帖数: 87
6
来自主题: Programming版 - 这里有人用 Erlang 吗?
Prolog syntax and all recursion based. Very difficult to pick up.
Good candidate for building large system with excellent support for
multipcore programming.
E/// SGSN control engine is all programmed with Erlang.
v*s
发帖数: 946
7
来自主题: Programming版 - 这里有大侠用Erlang么?
去erlang mailing list吧,那里的人都很热情的,有时候joe同志亲自答题的。
z****e
发帖数: 54598
8
来自主题: Programming版 - erlang系的东西从来都以量大著称
erlang做的产品
就适合那种量巨大,但是呢
每一个都不是很复杂的逻辑的那种
这本来就是通信行业搞出来的语言
这次19b认真看它的东西
还有一个关键是xmpp
gtalk就用了这个协议
是一个开放的通信协议
就跟http一样
索男们有兴趣的话,可以自己写一个客户端
用这些协议跟google/facebook对接上
gae里面也有这个协议的service
z****e
发帖数: 54598
9
来自主题: Programming版 - erlang系的东西从来都以量大著称
用过couchdb的就知道了
couchdb这一套比mysql可以支撑更大的并发量
大很多
有个bundle叫做lyce
类似lamp
就是典型的erlang系产品
p*****2
发帖数: 21240
10

大牛搞过erlang吗?感觉现在funcational语言比较流行,连Java都加上lambda了。Go
出来跟大趋势不符合呀。
c*****e
发帖数: 3226
11
string 本来就是 text processing 为目的的, 可是 erlang 做并行处理主要是 raw
binary data, like video, audio.
p*****2
发帖数: 21240
12

大牛玩过Erlang吗?随便谈谈?
g*****g
发帖数: 34805
13
Whatsapp是Erlang写的,Tango.me是Java写的。Whatapp 4亿用户,Tango.me 2亿用户。
举这个例子就是说明没啥应用非得小众语言才能写得出来。
c*******9
发帖数: 9032
14
Erlang算小众还是大众?
举这些例子都说明不了这个论点,
尽管这个论点没什么问题,就是废话而已。

户。
g*****g
发帖数: 34805
15
喔,京二不是觉得 java大并发有问题。所以举个例子,Erlang当然是小众语言。
c*****e
发帖数: 3226
16
这个讨论没说非要用erlang, 只是她有讨人喜欢的独特之处。
所谓的 大众语言, 只不过经理更容易找到 cheap slaves 而已!

户。
l**********n
发帖数: 8443
17
来自主题: Programming版 - 学Scala是不是要学Erlang
Erlang是不是比Scala更好?
l**********n
发帖数: 8443
18
来自主题: Programming版 - 学Scala是不是要学Erlang
Looks like Erlang is a must to learn.
p*****2
发帖数: 21240
19
来自主题: Programming版 - 学Scala是不是要学Erlang

Erlang不是一个通用的语言。
c*******r
发帖数: 610
20
来自主题: Programming版 - 学Scala是不是要学Erlang
FB Chat used Erlang
c******o
发帖数: 1277
21
来自主题: Programming版 - 学Scala是不是要学Erlang
Chef in fact has a erlang core and ruby peripheral
a*****e
发帖数: 1700
22
来自主题: Programming版 - 学Scala是不是要学Erlang
老皇历了,已经被淘汰,听说后来又用 C++ 重写了。估计是那几个 erlang 程序员跳
槽了吧,hehe
a*****e
发帖数: 1700
23
来自主题: Programming版 - 学Scala是不是要学Erlang
目前用 erlang 风头最劲的当数 whatsapp,估计一时半会儿不会变
t**r
发帖数: 3428
24
scala确实是最好的語言,什么go erlang,都若爆了
n****n
发帖数: 101
25
如果说某包传输时间分布是Erlang of order 2,那么该如何描述?什么公式?
w*******a
发帖数: 27
26
【 以下文字转载自 Statistics 讨论区 】
发信人: wulongcha (hahaha), 信区: Statistics
标 题: 两个erlang的convolution能得到简单的expression吗?
发信站: BBS 未名空间站 (Fri Nov 4 01:17:11 2005), 转信
rate不一样,阶也不一样
能得到简单的expression吗?
3x!
r******8
发帖数: 430
27
在ebay上卖个东西,买家是美国的地址,结果我在list上没有把国际shipping的勾选去
掉,结果变成国际shipping,查下tracking的结果如下
Customs Cleared
2014-04-19, 12:20:00, Feltham, Middlesex TW14 0LZ
Shipped from US Shipping Center to International Destination
2014-04-17, 17:34:52, Erlanger
Customs Documentation and Labeling
2014-04-16, 11:40:27, Erlanger
Processing at US Shipping Center
2014-04-16, 11:02:37, Erlanger
Arrived at US shipping Center
2014-04-15, 23:52:00, ERLANGER, KY 41018
实际上买家的地址就是ERLANGER, KY。结果货现在Feltham, Middlesex TW14 0LZ,怎
么办?... 阅读全帖
g*****g
发帖数: 34805
28
来自主题: Programming版 - 从今天开始起,学C++!
Good article, you can also take a look at this one.
http://www.infoq.com/news/2008/06/scala-vs-erlang
I think it has an unbiased conclusion. At the end of the day though,
I think Scala's access to Java libraries, and less steep learning
curve makes it more attractive for Java developers that are widely available.
[Snippet]
Both Scala and Erlang are languages that target the multi-core crises. They
come from different background and eras and thereby approach some problems
differently, but in many... 阅读全帖
g*****g
发帖数: 34805
29
来自主题: Programming版 - 从今天开始起,学C++!
Of course learnging curve is critical. There's a reason Java gets popular
while Smalltalk remains a niche. Java's syntax looks like C/C++ and there
are bunch of C/C++ developers in 90s that can pick up Java quickly.
This immutable thing is wrong assessment on Scala. think about it
actor1 -> message(String, String....) -> actor2. How can this message
not immutable? Practically it's not an issue on Scala, you just need
to know what you are doing.
Erlang has been there for decades, it's not popular... 阅读全帖
c*******0
发帖数: 5247
30

WHAT? 什么叫Java引进Concurrency?Java有什么Concurrency是不能做的?JVM连CPU级
别的concurrency primitives 都给你了好不好?Java从头开始设计就是考虑了
Concurrency的,说Java没有concurrency的有没有用过ConcurrentHashMap,
ConcurrentQueue这些东西啊?
现在的新程序员觉得说Java没有concurrency都是被Erlang和Go影响的,那根本就是误
解。Java concurrency的问题从来就不是“语言中”没有,而是不好用。这是两个概念
好不好?
Java的concurrency依赖于thread和lock,首先这个不好写,其次这个不好调试,其三
,你往上scale之后,Kernel的thread模型根本上就不是scalable的模型。
Go和Erlang闪光的地方是把thread和lock的概念淡化了,把thread变为light weight,
然后变成了语言的核心。这里面所有的事情Java都能做, 你自己可以用纯Java写一个
light weight ... 阅读全帖
h****r
发帖数: 183
31
【 以下文字转载自 JobMarket 讨论区 】
发信人: husker (三弟 deal007), 信区: JobMarket
标 题: Senior Software Engineer and Technical Lead
发信站: BBS 未名空间站 (Fri Aug 26 17:09:59 2011, 美东)
帮朋友转发的,给办H1B.
Senior Software Engineer and Technical Lead – Hop2.com (pls send resume to
[email protected] )
We are seeking a strong engineer with experience in working with and leading
an international team of developers to help develop the future of Hop2.com
– the Leader in International Travel.
Responsibilities:
- Work directly with our I... 阅读全帖
w**z
发帖数: 8232
32
二爷威武阿,走在大家前头阿。下一步该搞open source?
http://www.javaworld.com/javaworld/jw-03-2013/130314-on-becomin
Developer tip No. 1: Blog
Set up a blog, and post more than once a month. Do real research and make
sure you don't sound stupid. Seriously, learn to write. Do the stuff your
grade-school English teacher taught you: Create an outline, draw a narrative
, check the grammar and spelling. Then, with great sadness, simplify it and
shorten it to the point enough where someone scanning it will have an idea
of... 阅读全帖
h****r
发帖数: 183
33
来自主题: JobMarket版 - Senior Software Engineer and Technical Lead
帮朋友转发的,给办H1B.
Senior Software Engineer and Technical Lead – Hop2.com (pls send resume to
[email protected] )
We are seeking a strong engineer with experience in working with and leading
an international team of developers to help develop the future of Hop2.com
– the Leader in International Travel.
Responsibilities:
- Work directly with our IT team in China/Taiwan to provide technical
guidance and direction
- 4+ years programming experience
- Functional programming language (JavaScript / Python / Lisp... 阅读全帖
b***e
发帖数: 1419
34
* 我没说ruby/python不好。我本人是ruby的fans。我只是说它们不能作为严格意义上
的函数式语言。在学术界,大家认为Haskell/Lisp/ML/Ocaml/Erlang是函数式语言,但
没有人认为ruby/python是。不是有lambda就是funtional language。
* Ruby on Rails并没有颠覆任何东西,它只不过是把复杂的java based web
framework搬到scripting language上的一个先驱。python/php/perl/any script
language can do the same thing. It's not a language specific thing at all.
* Google only uses Python because they suck, not because python is
particularly better than other languages in any sense.
* map/reduce is just a term. It roots ... 阅读全帖
c*****e
发帖数: 3226
35
来自主题: Programming版 - 从今天开始起,学C++!
learning curve is far less important than reliability. learning curve 只是
对新手小萝卜有意义,对一个成熟的团队毫无意义。而且一个人也不会永远处于新手的
状态。
Erlang guarantees that race conditions won't happen because this data is
immutable. In Scala, though, you can send between actors pointers to mutable
objects. This is the classic recipe for race conditions, and it leaves you
just where you started: having to ensure synchronized access to shared
memory.
erlang 的distributed program and hot code swap非常经典非常简单,特别适合现在的云技术。
erlang语言没有被很好... 阅读全帖
d***q
发帖数: 1119
36
来自主题: Programming版 - Dao语言2.0第一个测试版发布了!
常见的
actor (scala), erlang的light weight process。
coroutine (stackless python)
erlang的process 有人证实过可以开几百万个
我看你的描述似乎和erlang有些像。如果能充分利用多核,倒是一件好事。
z****e
发帖数: 54598
37
来自主题: Programming版 - OOP里面的Object其实是actor
nonono
erlang没有人用
主要是搞通信还有从ee通信转行的人喜欢用
主流编程界并不推崇erlang

Erlang
c*****e
发帖数: 3226
38
来自主题: Programming版 - The WhatsApp Architecture
看看c/c++ 人说的dream scalability done in erlang:
I came in with a healthy amount of skepticism since most of my previous high
-performance experience was with C/C++, but after we worked through some of
our bottlenecks (as described in my talk at last year’s Erlang Factory SF),
I came to realize that Erlang was a great fit for what we were doing. We
were achieving scalability goals on our hosts that we only dreamed about at
Yahoo!
2 million tcp connections on a single box
* http://blog.whatsapp.com/... 阅读全帖
b********e
发帖数: 595
39
来自主题: Programming版 - 10M persistent TCP connections

消息类的应用应该大部分都是,不止mobile,主要是省server,充分利用资源。
whatapp那个应该有erlang在后面支撑,印象里erlang可以一堆机器之间比较容易的
cluster, vm native 支持,其实不奇怪,fb的chat也是erlang,使了什么,问问或者
搜搜就知道,使好了不容易, 不懂的咱也不瞎说了 :-)
b********e
发帖数: 595
40
来自主题: Programming版 - 10M persistent TCP connections

消息类的应用应该大部分都是,不止mobile,主要是省server,充分利用资源。
whatapp那个应该有erlang在后面支撑,印象里erlang可以一堆机器之间比较容易的
cluster, vm native 支持,其实不奇怪,fb的chat也是erlang,使了什么,问问或者
搜搜就知道,使好了不容易, 不懂的咱也不瞎说了 :-)
c*********e
发帖数: 16335
41
来自主题: Programming版 - Why oop is bad?
http://www.cnblogs.com/dasea/archive/2012/08/18/2644927.html
1。 Erlang是小众语言,使用它存在维护上的风险。(这个是缺点,但不是我最重要
的理由)
2。 Erlang的变量不可变,改变了程序员的思维习惯。
我个人原则上认可变量应不可变带来的好处,但是允许特殊情形下的可变(例
如for循环的自变量)。
3。 Erlang是动态语言。
我个人认为大型工程都应该使用静态类型语言,以获得更好的代码质量和性能
(静态类型语言更容易写出高质量少BUG的代码)。

is
them.
leave
h*i
发帖数: 3446
42
Communication of ACM(最权威计算机杂志)最新文章:
A Large-Scale Study of Programming Languages and Code Quality in GitHub
https://cacm.acm.org/magazines/2017/10/221326-a-large-scale-study-of-
programming-languages-and-code-quality-in-github/fulltext
结论:
1. FP语言代码质量最高,虫子最少。与虫子数量进行的回归分析中,统计结果显著的
最差和最好的语言如下:
最好:Clojure, -.30 ***
Haskell -.26 ***
Scala -.24 ***
Ruby -.13 **
最差:C++ .18 ***
Obj. C .15 **
C .11 **
PHP .10 *
Python .08 *
2. 编程语言的应用范... 阅读全帖

发帖数: 1
43
哟哟哟
编译器 解释器都没写过就别出来现了
Erlang 什么等级?
Lol
[在 stevenus (与娃共舞) 的大作中提到:]
:js就不要出来显了吧,起码是Erlang
:这个等级才有說服力吧
m*********a
发帖数: 3299
44
来自主题: USANews版 - 杀光亚裔,对美国屁影响没有
Jews .2% of world population, 20% of all Nobel prices, 40% of USA nobel
price, won more than 160 nobels.
All Asian are junk compare to Jewish people in your standard.
Literature[edit source | edit]
Year Laureate Country Rationale
1927 Bergson-Nobel-photo.jpg Henri Bergson[9][10] France "in
recognition of his rich and vitalizing ideas and the brilliant skill with
which they have been presented"[11]
1958 Boris Pasternak cropped.jpg Boris Pasternak[9][10] Sov... 阅读全帖
l****z
发帖数: 29846
45
Toyota to Consolidate U.S. Operations in Texas
Dallas Suburb Will Get North American Marketing, Manufacturing and Finance
Operations
By
Mike Ramsey And
Joseph B. White
Updated April 28, 2014 2:36 p.m. ET
Toyota Motor Corp. plans a sweeping shake-up of its U.S. operations,
consolidating several units in to a new headquarters in Plano, Texas, that
will house 4,000 people and serve as the hub for its North American
marketing, manufacturing and finance operations.
Toyota confirmed the moves on ... 阅读全帖
a*****r
发帖数: 1
46
来自主题: JobHunting版 - Go 有人知道吗?
难道大家没用过erlang? golang只会比erlang更高效,更流行
z****e
发帖数: 54598
47
来自主题: JobHunting版 - 王者荣耀 系统设计

也不完全,这里的session有十个人在同时使用这个session
web是一个人一个session,不需要处理并发,区别还是比较明显的
多了一步需要处理并发修改的状态,mmo是几千个人一个session
新浪微博用redis,用redis就增加了一层io,就慢
所以一般都是内存里面一个类来搞
而且一般的web server不支持udp
所以这些东西都要自己实现
最早用php,比如刀塔传奇,结果很慢,受不了
最早是php+mysql,我去
后来mysql换成了redis或者memcache,勉强够用
后来发现erlang有一个actor model,好像很好用
所以现在不少换erlang
暴雪就用了akka,原理类似
我们主张用vert.x
哼哼
a**i
发帖数: 432
48
【 以下文字转载自 USANews 讨论区 】
发信人: lczlcz (lcz), 信区: USANews
标 题: 好消息,Toyota撤出加州, 把operation全部搬到德州
发信站: BBS 未名空间站 (Mon Apr 28 15:54:17 2014, 美东)
Toyota to Consolidate U.S. Operations in Texas
Dallas Suburb Will Get North American Marketing, Manufacturing and Finance
Operations
By
Mike Ramsey And
Joseph B. White
Updated April 28, 2014 2:36 p.m. ET
Toyota Motor Corp. plans a sweeping shake-up of its U.S. operations,
consolidating several units in to a new headquarters in Plano, Texas, that
will ho... 阅读全帖
c*****e
发帖数: 3226
49
来自主题: SanFrancisco版 - 有没有熟悉ruby on rails给说说?
erlang 绝对是一个极其优秀的系统,就算你不用它,其中也有不少思想会让每个程序
员获益。
你确定是erlang么? 根据这个链接, 是scala. http://m.readwriteweb.com/cloud/2011/04/twitter-drops-ruby-for-java.php
m********8
发帖数: 7463
50
【 以下文字转载自 USANews 讨论区 】
发信人: lczlcz (lcz), 信区: USANews
标 题: 好消息,Toyota撤出加州, 把operation全部搬到德州
发信站: BBS 未名空间站 (Mon Apr 28 15:54:17 2014, 美东)
Toyota to Consolidate U.S. Operations in Texas
Dallas Suburb Will Get North American Marketing, Manufacturing and Finance
Operations
By
Mike Ramsey And
Joseph B. White
Updated April 28, 2014 2:36 p.m. ET
Toyota Motor Corp. plans a sweeping shake-up of its U.S. operations,
consolidating several units in to a new headquarters in Plano, Texas, that
will ho... 阅读全帖
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