Geeky Aspect

The Farmer Fred Rant: Mulch under Citrus Trees: Pros and Cons

2012-01-19T10:27:00.000-08:00

The Farmer Fred Rant: Mulch under Citrus Trees: Pros and Cons: I love mulch. That would be obvious to anyone who has ever talked gardening with me. Big piles, small piles, inches of mulch scattered ev...

回复-我老来好好说说出家这档子事儿

2010-11-08T19:11:00.000-08:00

发信人: DeathRay (戴斯瑞), 信区: PKU
标题: 我老来好好说说出家这档子事儿
发信站: BBS 未名空间站 (Mon Nov 8 15:37:17 2010, 美东)

首先，为什么我鄙视一切宗教。我认为把别人发明的东西当作自己的人生信仰是极其愚
蠢和懦弱的。愚蠢在于明明连自己都知道那是虚无的东西却还毫无来由的顶礼膜拜，而
懦弱则在于自己放弃了自己原本的人生追求，心里找到一个莫名的依靠，然后随波逐流
的每天得过且过混日子。佛教/基督教/伊斯兰教等等就是由释迦摩尼/耶稣/穆罕默德等
人以及他们的追随者发明的。

有人要说了，那科学呢？——科学不是别人“发明”的，自然规律和科学定律，它们本
来就在那儿。人们只是去“揭示”或者“发现”它们。另外，不要一来就说什么牛顿帕
斯卡是研究神学的，那时有那时的历史原因，而且随着科学的发展，宗教也在不断的被
迫妥协着。现在只有食人族的巫师才敢鼓吹地心说和反对进化论。还有好多宗教人士喜
欢说什么爱因斯坦是信仰基督教的，拜托，爱因斯坦信仰的是自然规律，请好好查查文
献再来臭屁。我说这些是想说明，科学研究和宗教信仰——在以前可以——但在现在，
绝对是不相容的。北大居然可以把懂科学的大好青年变成了有神论者，教育者们可真是
功不可没。

另外，和尚对地球，对社会，对人类有什么贡献？就和尚这个职业本身，凭我老匮乏的
想象力还真说不出来。您可能要说有哪位高僧会医术行医救人，或者哪位高僧诗文书画
卓绝，等等等——注意，别跑题——那些并不是他们作为和尚这个职业本身的贡献。
（当然，我一直也觉得做金融的对于地球没有任何贡献，但是人家学金融的是社会所需
要的。社会需要和尚吗？如果需要，需要他们干嘛？要饭？）退一万步说，我们假设做
和尚真的可以对地球有贡献。谁又来说说，现在中国有哪一所寺庙可以“清修”，哪所
寺庙不是乌烟瘴气，以忽悠白痴和贩卖一大捆一大捆的香为业。少林寺方丈的那些屁事
很多人都知道吧，第一寺尚且如此，其他寺庙呢？在那种环境下，钻研个屁佛法啊。

另外，我发现人世间还真就有些个站着说话不腰疼的人。设身处地想一想，独生子女，
每家就一孩子。要是你的独生子或者独生女去当了和尚或者尼姑，你们能说出那样的话
来？我这里就不展开说了，你们自己回味一下，那些话算是人话吗？？？

北大教育的失败，一是在于进到各个系的学生，有大多数根本从来就不喜欢这个专业，
而老师以及学校的舆论导向也不能使这些人在毕业的时候变得喜欢上这个专业；二是在
于，原本喜欢这个专业的学生，在四年的本科教育之后，又有大多数开始不喜欢甚至退
出原本自己热爱的学科了。北大老师相比国外教授，水平差得太远这只是表层原因。学
校没有好好鼓励学生去钻研自己由衷热爱的学科，以及引导学生去寻找一条属于自己的
有意义的人生才是失败的最大原因。作为北大数学系学生，毕业之后没有继续去从事数
学相关的研究，已经是北大数学系教育的失败了，更何况是去做一个对社会完全没有贡
献的职业。数学系主任要负责，北大校长也要负责。

如果有人非得要说，人家是追求人家自己的幸福去了，我们“俗人”不能理解。OK，那
我还说患有精神病的、植物人，那些人都自己觉得特幸福呢——因为我们不能理解他们
是怎么想的。

我觉得吧，谁要是真心觉得当和尚去了那叫幸福，或者，真心觉得佛法可以普渡众生，
我有同学在安定医院，你们要不要去看看。

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和尚不是职业，是个人选择的一种生存状态，用大部分时间来钻研佛法。如果谁把和尚
当谋生职业那只能是对追求佛教的误解。宗教对世界的贡献是很难用物质尺度衡量的，虽然他没有给你制造火箭的方程或者海底勘探的技术，但是人类科学追求高科技的目的就是提高生活质量，让人活得更快乐。宗教的目的也是追求快乐，让人心里平和幸福，但方式并不需要通过高科技，而是精神领域的开发，心的锻炼。如果
和尚能让人感到满足，那么效用就等同于金融让你赚钱，对世界的贡献也等同。

自然定律是在那里的，要科学家揭示大家就知道了。宗教里所信奉的理念，神或上帝也
好，也许同样是存在而需要宗教学家来揭示的，你没有经历过，没有尝试去发掘，你怎么能断定就是
假的呢？就因为你看不见吗。像当年日心说无法被验证而被认为是邪说，科学发展到后来就揭示真实
了。也许过相当长时间，宗教里的信条也能被科学所验证。宗教里的内容也许不完全都是对的，但很
多宗教流传了千年，直到科学发达的今天，说明他对人类是有帮助的，也许你觉得都是虚无缥缈，但是他让人快乐，和睦相处，这就是价值。

北大提供的科学研究环境不要太丰富，如果学生成为有神论者完全是自己的意志选择，
怪不得学校。我觉得反而应该感谢学校，因为有个开放宽松的教育环境，启发和鼓励大家追求自己感
兴趣的人生道路和宇宙真理，这才是真正的科学精神-open mind，discover the unknown 而不是只
顺着科学家指点的方向走下去，对陌生，非社会主流的信仰理念排斥拒绝。

目前国内很多的庙，给人感觉偏重在大兴佛寺，烧香赚钱等活动上。这并不是佛教主张
的，你可以查所以的佛经，没有一处说信佛的人一定需要出家当和尚，烧很多香，完全是很多人追求
的形式主义。佛经里只说如果对佛有信心，是可以烧香来表达的。很多出家人不专心修行，难免被世
俗形式影响。这并不是说宗教本身有问题。宗教要以他的教理为准绳，比如圣经，而不是某个传教士
的行为举止。就像读同一所学校的学生水平有差别一样。这个确实比较困难。

还有关于精神病或植物人，他们也许因为脑部非正常活动，产生幸福感，但是几乎没有
一个这样的人能长期持续在幸福感里，他们感觉时好时坏，不稳定。而按照宗教方法学习练习的人，
很多能够控制自己持续在快乐状态下。比如很多打禅坐的人禅定时升起的喜乐感，能持续很长时间。
这些如果你从来没有去了解，尝试，是很难感同的。

科学能提高生产力，佛法也许能普渡众生，关键在于你是否愿意运用采纳，按照过来人
的方法去实施。

"那一天"-仓央嘉措

2010-11-06T09:38:00.000-07:00

(据说并非是他自己写的，但不知道什么因缘编在他的诗集里了)

那一夜，我听了一宿梵唱，不为参悟，只为寻你的一丝气息。    那一月，我转过所有经轮，不为超度，只为触摸你的指纹。    那一年，我磕长头拥抱尘埃，不为朝佛，只为贴着了你的温暖。    那一世，我翻遍十万大山，不为修来世，只为路中能与你相遇。    那一瞬，我飞升成仙，不为长生，只为佑你平安喜乐。      那一天，闭目在经殿香雾中，蓦然听见你颂经中的真言。      那一月，我摇动所有的转经筒，不为超度，只为触摸你的指尖。    那一年，磕长头匍匐在山路，不为觐见，只为贴着你的温暖。      那一世，转山转水转佛塔啊，不为修来生，只为途中与你相见。        那一刻，我升起风马，不为乞福，只为守候你的到来。    那一日，垒起玛尼堆，不为修德，只为投下心湖的石子。    那一月，我摇动所有的经筒，不为超度，只为触摸你的指尖。    那一年，磕长头在山路，不为觐见，只为贴着你的温暖。    这一世，转山不为轮回，只为途中与你相见。

ZZ- “Present moment reminder”

2010-10-29T09:15:00.000-07:00

The foundation for all doing is conscious being.

That's the important realization about the question "what about manifesting?"

Before we talk about manifesting,

before we build some new building or structure,

get the foundation first.

Do you have the foundation?

Don't start building a house without a foundation.

ZZ我问佛-仓央嘉措

2010-10-18T11:37:00.000-07:00

我问佛：为何不给所有女子羞花闭月的容颜？

佛曰：那只是昙花的一现，用来蒙蔽世俗的眼  没有什么美可以抵过一颗纯净仁爱的心

我把它赐给每一个女子  可有人让它蒙上了灰

 我问佛：世间为何有那么多遗憾？

佛曰：这是一个婆娑世界，婆娑即遗憾  没有遗憾，给你再多幸福也不会体会快乐

我问佛：如何让人们的心不再感到孤单？

 佛曰：每一颗心生来就是孤单而残缺的  多数带着这种残缺度过一生  只因与能使它圆满的另一半相遇时  不是疏忽错过，就是已失去了拥有它的资格

我问佛：如果遇到了可以爱的人，却又怕不能把握该怎么办？

 佛曰：留人间多少爱，迎浮世千重变  和有情人，做快乐事  别问是劫是缘

我问佛：如何才能如你般睿智？

佛曰：佛是过来人，人是未来佛，我也曾如你般天真

世间万物分为十界：佛,菩萨,声闻,缘觉,天,阿修罗,人,畜生,饿鬼,地狱；  天,阿修罗,人,畜生,饿鬼,地狱.为六道众生；  六道众生要经历因果轮回,从中体验痛苦。  在体验痛苦的过程中,只有参透生命的真谛,才能得到永生

佛曰，人生有八苦：生，老，病，死，爱别离，怨长久，求不得，放不下。

 佛曰：命由己造，相由心生，世间万物皆是化相，心不动，万物皆不动，心不变，万物皆不变。

佛曰：坐亦禅，行亦禅，一花一世界，一叶一如来，春来花自青，秋至叶飘零，无穷般若心自在，语默动静体自然。

佛说：万法皆生，皆系缘份，偶然的相遇，暮然的回首，注定彼此的一生，只为眼光交汇的刹那。  缘起即灭，缘生已空。

佛门中说一个人悟道有三阶段：“勘破、放下、自在。”  的确，一个人必须要放下，才能得到自在。

我问佛：为什么总是在我悲伤的时候下雪

佛说：冬天就要过去，留点记忆

我问佛:为什么每次下雪都是我不在意的夜晚

 佛说:不经意的时候人们总会错过很多真正的美丽

我问佛:那过几天还下不下雪

佛说:不要只盯着这个季节，错过了今冬 ，明年才懂得珍惜。

我问佛：你多大？
佛说：我就算一岁，我也是佛，你就算100岁如果固守自己的心灵那也是人。
 
我问佛：世事本无常是什么意思？
佛说：无常便是有常，无知所以无畏。
 
我问佛：我的感情总是起起落落？
佛说：一切自知，一切心知，月有盈缺，潮有涨落浮浮沉沉方为太平。
 
佛曰：执著如渊，是渐入死亡的沿线。
佛曰：执著如尘，是徒劳的无功而返。
佛曰：执著如泪，是滴入心中的破碎，破碎而飞散。
 
佛曰：不要再求五百年，入我空门，早已超脱涅（磐）。
我再拜无言，飘落，坠入地狱无间
 
佛曰：缘为冰，我冰冰拥在怀中；
冰化了，我才发现缘没了。
我信缘，不信佛。
缘信佛，不信我。
 
佛把世间万物分为十界：佛、菩萨、声闻、缘觉、天、阿修罗、人、畜生、饿鬼、地狱；
天、阿修罗、人、畜生、饿鬼、地狱为六道众生；
六道众生要经历因果轮回，从中体验痛苦。
在体验痛苦的过程中，只有参透生命的真谛，才能得到永生。
凤凰，涅盘。

(仓央嘉措-六世达赖喇嘛，著名诗人，著有情歌六十二首，被翻译成多国文字

http://www.cyjc.org/?p=291)

thoughts from Meditation

2010-08-12T18:15:00.000-07:00

It's been a year since I fade out of a tech. nut and become a focused heart & soul trainer.
Thought this is still a good place to share ...I think...as a new meditator...YES, try to be upfront and geeky.

This morning, when I was preparing to meditate on the subject of Loving, kindness & compassion, I couldn't stop thinking about the argument I had with a Christian friend yesterday. She told me that human life is temporary, Christian believes that man will enter heaven or hell and stay eternally thereafter. This is not a new point, but it suddenly makes me feel the extraordinary pain man encounters after death and before the next life. How strong and irresistible man wants to reborn or exist after the mind leaves the physical body!

But just like the process of born, it does not happen in a blink of an eye. Pains and tears incur. Then, how dark and grotesque the time will be when a dead resists the truth and frenetically strives to come back life wherever in heaven or in hell. Our attachment to a state of physical existence are so strong that we can not bear even a snap of lose ego sense.

I am not in heaven, I am on earth now. I was born as a human, by virtue of mother's blood and father's energy. They create a tiny origin form of body to which my mind was able to attach after dying in my past life. I am so grateful that I find them, out of the panic that I no longer exist, that all my past friends and relatives left me underground, that some devil may catch me to the hell due to my bad deeds. So I can rely on this present body and raised up gradually by my parents full of love.

Before born I was an old unknown to my parents, but they gladly accept me without any words. How compassionate they are! Like the parents in all my past lives, only that we become unknown now, because the reborn makes us forget all the darkness after we die in the past life. Man is forgetful, as soon as his mind can settle on physical form - the ego comes back, he doesn't want to remember any affliction in previous lives.

I do not remember but I want to agree, that we owe countless gratitude to all sentient beings, who were, are, will be our parents through all time of our ego existences, unconditionally grant their love to us. Then, naturally comes my Loving, kindness & compassion for them...

about writing regular expression in Java

2009-07-22T12:03:00.000-07:00

If only want to match one string once,
use:
String myPatternStr = "a*b";
boolean b = Pattern.matches(myPatternStr, "aaaaab");

If need to match multiple times, then need to use:

Pattern p = Pattern.compile("a*b");
Matcher m = p.matcher("aaaaab");
boolean b = m.matches();

See the complimentary tutorial at sun:
http://java.sun.com/docs/books/tutorial/essential/regex/index.html

For recognizing some special characters like "\d","\s", we actually need "\\":
This is because the Java core syntax will be applied first, then the reg expression special char syntax.
So if you want to find a match for "a*" (a followed by a literal star), you should write:
String patternStr = "a\\*"; not "a*"(means zero or more a); not "a\*" (because Java syntax will try to parse "\*" as a special char and the "\" as an escape symbol)
and for matching a literal backslash, we need "\\\\" in our program

http://www.javamex.com/tutorials/regular_expressions/character_classes_named.shtml
http://www.scribd.com/doc/965568/16-Java-Regex

Greedy and none greedy string match: (add "?" after the char that is not requiring strict matching)
http://www.exampledepot.com/egs/java.util.regex/Greedy.html?l=rel

Don't forget the regular expression standard, no mater which language you're using.
http://regexlib.com/CheatSheet.aspx

The difference of HTTP POST and GET

2008-10-16T09:58:00.000-07:00

Reminder me of the Web basics.

When doing a form submit from client side (web browser) to the server,
POST allows you to send more data then 1024 chars in tunnel
GET will append all your data in the URL section <= 1024 chars

So in my Ext.Ajax.request(), if sending a lot of data like a JsonData object of a whole grid, use config: method: POST

See: http://www.jguru.com/faq/view.jsp?EID=56472

Answer
GET and POST basically allow information to be sent back to the webserver from a browser (or other HTTP client for that matter).

Imagine that you have a form on a HTML page and clicking the "submit" button sends the data in the form back to the server, as "name=value" pairs.

Choosing GET as the "method" will append all of the data to the URL and it will show up in the URL bar of your browser. The amount of information you can send back using a GET is restricted as URLs can only be 1024 characters.

A POST on the other hand will (typically) send the information through a socket back to the webserver and it won't show up in the URL bar. You can send much more information to the server this way - and it's not restricted to textual data either. It is possible to send files and even binary data such as serialized Java objects!

A PUT allows you to "put" (upload) a resource (file) on to a webserver so that it be found under a specified URI. DELETE allows you to delete a resource (file). These are both additions to HTTP/1.1 and are not usually used. HEAD returns just the HTTP headers for a resource. TRACE and OPTIONS are also HTTP/1.1 additions and also rarely used.

The Servlet spec allows you to implement separate Java methods implementing each HTTP method in your subclass of HttpServlet. Override the doGet() and/or doPost() method to provide normal servlet functionality. Override doPut() or doDelete() if you want to implement these methods. There's no need to override doOptions() or doTrace(). And the superclass handles the HEAD method all on its own.

I want my GongFu - Mac

2008-07-05T11:54:00.000-07:00

someone as a Mac fanatic desperately recommend the Mac. I said all the family are too expensive. He said starts from $599 I can get a Mac Mini box and plug in my old monitor and keyboard. Or deal with a "refurbish" one with full warranty on-line store.
But I don't want to just label myself as a Mac holder, I don't want Mac mini and MacBook. I want a Mac Pro as a professional tech geek. To explore its processing extreme and the true differnece.

Saw one co-workers detailed pic of his Mac pro desktop. Spur me up!
http://web.mac.com/mjbrunner2001/iWeb/Photos%202007/MacPro.html

Ext JS Tips And Tricks

2008-05-15T17:31:00.000-07:00

http://orderpt.com/wiki/Wiki.jsp?page=ExtJSTipsAndTricks

sadly the Code seg is not allowed here

Disable web browser back and refresh button in Javascript

2008-05-15T07:49:00.000-07:00

use:

lt%body%gt
onload="window.history.forward(1);">
... BODY CONTENT ...
lt%body%gt

From: http://forum.java.sun.com/thread.jspa?threadID=641697&tstart=0
"
Actually window.history.forward(1) would push the current page ahead in the "visited pages history". A negative number like -1 would restore the previous visited page from browser's cache. Zero is relative to the current (displayed) page. Positive numbers would navigate forward.
If the page number (positive) does not exist in history, your browser will create an entry "copying" the current page to it and setting it as the current entry, so that the previous and actual are the same.

Using window.history.forward(1) does not disable "Back button". The button will work BUT as this script runs on page loading, it will send you "ahead" the history, which stored URL (or page) is the same. So it works like a "Refresh" button, without actually refreshing content from server, but just restoring from cache."

Some other methods used in HTML:
http://www.htmlgoodies.com/tutorials/buttons/article.php/3478911

Disable the refresh button:
http://forum.java.sun.com/thread.jspa?threadID=434163&messageID=1947210

how the "watch" function in Java developer's forum used

2007-10-04T08:46:00.000-07:00

I post a question weeks ago and I didn't expect that people keep on updating the answer times again. And the answers are really incisive.
See for example:
http://forum.java.sun.com/thread.jspa?threadID=5216558

I get noticed by email of their answer because I add this topic to my "watch" list on Sun't forum and select email update. That's really a good way to get informed coz you don't need to wait on-line for the answer.

I also use the Google compt.lang.java.GUI discussion group. These are the two I stick to.

So my conclusion on using forum for Java problem is:
If you don't want to spend time on your post format and hope to get a quick answer but may not be correct, use the Google group.
If you a not in a hurry, describe your problem in detail, give a "Short, Self Contained, Compilable and Executable, Example Program "(SSCCE) and wait for sure the answer from the Java forum.

the java.net open lib for Swing app

2007-09-28T07:21:00.000-07:00

Take a look at:
https://swinglabs.dev.java.net/

Esp. the desktop dev. tools

SwingLabs SwingX package:
http://swinglabs.org/projects.jsp

see demo
http://swinglabs.org/screenshots.jsp

Two useful gadget:
1. Date picker (Calender-popup)
2. Text autoComplete Combobox
3. log-In window

What is databinding?
Databinding is simply associating a property of one Object (p1) with a property on another Object (p2) so that whenever the property p1 changes, the property p2 is updated to reflect that change, and vice versa. This is useful in GUI applications by automating the task of binding a UI component such as a JTextField with a data object such as a Customer object so that the text field displays the customer's "name" property. Any updates to the text field will update the "name" property of the bean, and vice versa.

Strongly typed language vs. weakly typed

2007-09-27T08:47:00.000-07:00

http://www.cincomsmalltalk.com/userblogs/buck/blogView?showComments=true&entry=3252458583

Static vs dynamic typing describes at what point type analysis (determining whether a programmer's request to perform a particular operation is permissible) happens: at compile time for a statically typed language, or at run time for a dynamically typed one. Manifest typing in this view is close in the meaning, if not necessarily an exact synonym, of static typing. Statically typed languages often require type declarations in programs, however some statically typed languages such as ML can in some cases infer types from the operations performed, making manifest type declarations unnecessary. It is important to note that dynamic typing does not imply absence of type checking, in spite of the absence of variable and function type declarations--so calling dynamically typed languages such as Smalltalk "untyped" would be grossly incorrect.

Strong vs weak typing characterizes whether type checking, static or dynamic, can be meaningfully circumvented. "Meaningfully" is important here, implying that the type overrides should be predictable in their effect and at least reasonably portable between implementations. In a weakly typed language such overrides are possible. For example, in C , one can take a pointer to an Employee, cast it to char* and pass to a function that expects an argument of that type. In contrast to that, in Smalltalk it is not possible to take an instance of Employee and use with it an operation not defined for instances of Employee.

Actually, Testing is more important to guarantee program correctness than selecting among XXX-typed languages:

See Bruce Eckel's note: (In which he advocate python)

5-2-03 Strong Typing vs. Strong Testing

http://mindview.net/WebLog/log-0025

That is to say, if a program compiles in a strong, statically typed language, it just means that it has passed some tests. It means that the syntax is guaranteed to be correct (Python checks syntax at compile time, as well. It just doesn't have as many syntax contraints). But there's no guarantee of correctness just because the compiler passes your code. If your code seems to run, that's also no guarantee of correctness.

The only guarantee of correctness, regardless of whether your language is strongly or weakly typed, is whether it passes all the tests that define the correctness of your program. And you have to write some of those tests yourself. These, of course, are unit tests. In Thinking in Java, 3rd Edition, we filled the book with unit tests, and they paid off over and over again. Once you become "test infected," you can't go back.

It's very much like going from old C to C++. Suddenly, the compiler was performing many more tests for you and your code was getting right, faster. But those syntax tests can only go so far. The compiler cannot know how you expect the program to behave, so you must "extend" the compiler by adding unit tests (regardless of the language you're using). If you do this, you can make sweeping changes (refactoring code or modifying design) in a rapid manner because you know that your suite of tests will back you up, and immediately fail if there's a problem — just like a compilation fails when there's a syntax problem.

But without a full set of unit tests (at the very least), you can't guarantee the correctness of a program. To claim that the strong, static type checking constraints in C++, Java, or C# will prevent you from writing broken programs is clearly an illusion (you know this from personal experience). In fact, what we need is

Strong testing, not strong typing.

This is a test

2007-08-05T11:12:00.001-07:00

workBench test as usual