w*****g
发帖数: 16352 | 1 what? that's a map annoucement?
I thought they came up with somet new product called "google penis", which
you can put on your back, to walk around and look like a dick.
Between this and that google glass thing, I haven't decided which one to buy. |
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o***g
发帖数: 2784 | 2 做网站的，需要关心的就是peak time traffic就好了。
所以大网站就是流量大。更准确地说是峰值的流量大。只要峰值的时候能撑得住就好了。
技术上说，就是从memory data到html到浏览器显示的过程是做网站的需要负责的。
业务逻辑复杂的，你需要找个业务逻辑专家来协助。
数据量大的，需要找个数据库专家来协助。
如果select * from sometable where name='xxx';在一个千万以上级别的表里面没有
加索引，用啥做也白扯。不是php或java或什么framework能够解决的。
如果数据量再大，需要分表的时候，程序方面也就需要参与了。
框架的唯一目的是快速开发，无他。缺点就是损失性能。
大型网站就是需要性能，两者是矛盾的。
所以大型网站不用框架。
大型网站想要提高性能就是在memory data到浏览器显示结束这段时间内所有的事情上
想办法加cache和加人手(cluster)。当然设计上不能有大问题。
当然还有，可以做一些预处理，在非峰值的时候预处理一些数据，放着，等峰值的时候
使用。在我看来思路是一样的。
大型网站，都大型了，专门为他开发也不 |
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x******r
发帖数: 367 | 3 I am not in the field, so I can not tell you much.
Testing is a large field.
Dig into it and there should be someting meaningful to work on. |
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D****N
发帖数: 430 | 4 to get first record sorted on someindex you can
use:
SELECT TOP 1
something, something, something
FROM
sometable
ORDER BY
someindex |
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S*******s
发帖数: 13043 | 5 what I want to is like this:
declare @acc int,@id int,@count int
decalre my_cursor cursor for
select id, count from sometable
set @acc=0
open my_cursor
fetch next from my_cursor
into @id,@count
while @@fetch_status=0
begin
@acc=@acc+@count
-- i want to insert a new raw to the recordest returned, but how?
insert_to_recorset @id,@acc
fetch next from my_cursor
into @id,@count
end
close my_cursor
deallocate my_cursor |
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b***n
发帖数: 2 | 6 I am using Oracle as the DB server. so i create a user APPADMIN to create and
maintain the schema objects (tables, views, and etc). When i access the
database with an application user, say TOM, who is another database user in
the Oracle, I need to use a SQL as "SELECT * from APPADMIN.sometable". that
looks very inconvenient, as I have to use the schema name before the table
names, and it is not portable to other DBMS. on the other hand, if i use
APPADMIN to connect to the database in the applic |
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c**t
发帖数: 2744 | 7 SQL Server:
create proc prc_Test
@type varchar(20),
@validFrom datetime,
@validTo datetime
as
select blah from SomeTable where type=@type
and somedate between @validFrom and @validTo
exec 'blah blah', DateAdd(dd, -7, GetDate()), GetDate()
Server: Msg 170, Level 15, State 1, Line1
Line1: Incorrect syntax near 'dd'.
but the following statements are correct:
declare @d1 as datetime, @d2 as datetime
set @d1=DateAdd(dd, -7, GetDate())
set @d2=GetDate()
exec 'blah blah', @d1, @d2
what's wrong w |
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s****8
发帖数: 4 | 8 要更新数据库里的某bit的值， 如果值是0,需要变成1；如果值是1,需要变成0
i tried the following and it works:
update sometable set somebit=somebit -1 where id=123456
is there any other solution? |
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c**t
发帖数: 2744 | 9 Can any nHibernate expert let me know what's wrong with the following? I
alwasy got Acccount.ListAttr as null; when do "foreach(var a in Account.
ListAttr)" I got invalid cast error: can't cast ISet to IList..
I have Account.hbm.xml as follows:
...
..
and Account.cs has:
public virtual ISet ListAttr {get; set; }
..
Also have SomeOtherClass.hbm.xml:
...
阅读全帖 |
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r*****l
发帖数: 2859 | 11 How do you start Tomcat? Did you see someting like "server started"? |
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s******e
发帖数: 493 | 12 You misunderstood what dynamic variable and dynamic functions mean. they are
not someting that preexist at the compiling time.
both js ans as allow you to define a new memeber of class on the fly.
.for example, adding a new variable/function to a class at run time. |
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l********1
发帖数: 72 | 13 实验室最近有个Java和Python之争，几个中国人想使用Java重写一个网站，但是一个美
国人不愿意，他只懂Python，而且他搬了救兵，据说是硅谷的高手，发的邮件里把我们
提到的java的东西说的一无是处。
可能他说的也有道理，但是任何东西都可以说出优势和劣势。而我们的表达不行，反驳
也力不从心。
现把那个硅谷高手的邮件贴出来，纯属技术探讨。请大家出谋划策，或者看看他说的是
否有道理，或者看看如何来辩驳。非常感谢。
Hey folks,
Point by point, I guess,
The only thing the tiobe shootout shows is that there are more search result
s for Java than there are for other languages. This is mostly about prolifer
ation of usage as the language of choice in the late 90s and early 2000s tha
n anything else. Java... 阅读全帖 |
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l********1
发帖数: 72 | 14 实验室最近有个Java和Python之争，几个中国人想使用Java重写一个网站，但是一个美
国人不愿意，他只懂Python，而且他搬了救兵，据说是硅谷的高手，发的邮件里把我们
提到的java的东西说的一无是处。
可能他说的也有道理，但是任何东西都可以说出优势和劣势。而我们的表达不行，反驳
也力不从心。
现把那个硅谷高手的邮件贴出来，纯属技术探讨。请大家出谋划策，或者看看他说的是
否有道理，或者看看如何来辩驳。非常感谢。
Hey folks,
Point by point, I guess,
The only thing the tiobe shootout shows is that there are more search result
s for Java than there are for other languages. This is mostly about prolifer
ation of usage as the language of choice in the late 90s and early 2000s tha
n anything else. Java... 阅读全帖 |
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n**d
发帖数: 9764 | 15 Thanks! How could you find it?! Is there any icon?
It works, but someting like this:
#define D(A) T << #A << endl; A
int main() {
ofstream T("format.out");
//assure(T);
D(int i = 47;)
D(float f = 2300114.414159;)
const char* s = "Is there any more?";
D(T.setf(ios::unitbuf);)
D(T.setf(ios::showbase);)
D(T.setf(ios::uppercase | ios::showpos);)
D(T << i << endl;) // Default is dec
...
} |
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a**u
发帖数: 59 | 16 you can install a plugin for latex for vim
it is called latex-suit for vim or someting like this
google it. |
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h****t
发帖数: 93 | 17 if you really wnat to do someting on it. go to
system properties/performance/virtual memory
and choose "let me specify my own virtual memory setting." |
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y******n
发帖数: 148 | 18 I don't know about you guys, when I was back in school, doing the audit
project, we were asked to iditify and evaluate the risk factor especially in
revenue, estimates, and inventory areas, as they are inherently of high
risk. While reading through those F/S, you might want to calculate ratios,
analyze trends, in another word, performing analytical procedures, inspect
notes accompanying F/S, and identify any unsual change,(increase, decrease,
from no to yes?)and investigate the difference. Somet |
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d*****k
发帖数: 93 | 19 someting natural, can't be trained on that, I think.
discribe, |
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H******t
发帖数: 687 | 20 if you don't need H1B visa sponsorship, i'd say go ahead for it.
if your LG is working right now and haveGC on the way, i'd say go for it.
The risk of actuarial science master degree now is basically out of job for
several years. If you have someting else to do to fill in this time period,
for example have some babies, i'd say go for it. |
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s*****7
发帖数: 1142 | 21 I got this part but my confusion is:
Option 1------ I throw away $50 a month if we don't die in 20 years.
Option 2------ I throw away first $50 and then $150 in the hope of getting
someting back to recoup the loss of $50, but actually the $150 cannot even
generate return on itself, so the $50 is anyway for sure a sunk cost can't
be recovered. With this being said, Option 1 is better? |
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l*****k
发帖数: 587 | 22 I think bioinformatics in a research sense has no good future, not yet,
neither academic nor industry... competition in academic is getting tougher.
Once a prominent scientist (VP of HHMI) told me he think the ratio of
biologist and bioinformatics in academic should be 10:1, the current
ratio is 30:1 (or someting like that)... not sure if he is still keeping
his idea.
Bioinformatics in industry is totally different, if you are only involved
in data support(storage, query), I am sure this kind of |
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h*******o
发帖数: 4884 | 23 It depends on what you orginally meant to say.
If you want to have someting similar in meaning "revert" then rescue
probably is the best candidate.
If you want to emphasize on getting the opposite phenotype, then reverse if
OK.
BTW, your original sentence does not read very well. You might want to
edit it. For example, we would predict or we predict is better then we will predict. |
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i***l
发帖数: 1656 | 24 少量有害物质 need to difuse into layers of sometic cells, then may get some
chance enter germline cells
ie. dose and possibility |
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m*****8
发帖数: 292 | 25 senior developer's $ is sure higher then senior BA's.
and BA is someting luxury, companies can do projects without them. |
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i******g
发帖数: 127 | 26 Boss will give me some time and budget for learning a new software in
transportation. Either in roadway, structure or traffic. So far, I am good
at traffic microsimulation. My weakness is roadway.
I want to ask some good software on roadway except AutoCAD or Microstation.
Someting good for future job searching or good for career grow.
Appreciate it! |
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j***n
发帖数: 301 | 27 可是set确实没有一个很好的定义
比如这里http://www.science.uva.nl/~seop/entries/set-theory/
这样说
As sets are fundamental objects that can be used to define all other concept
s in mathematics, they are not defined in terms of more fundamental concepts
. Rather, sets are introduced either informally, and are understood as somet
hing self-evident, or, as is now standard in modern mathematics, axiomatical
ly, and their properties are postulated by the appropriate formal axioms. |
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H****h
发帖数: 1037 | 28 我建议引入一个时间顺序。一个集合定义的时候是可以包含一切已有的概念，
但是不能包含这个集合本身。这个集合本身是在这个集合定义完毕后才有的概念。
concept
concepts
somet
axiomatical |
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s*x
发帖数: 3328 | 29 没有，只有分类。比如符合某三条公理（或者等价的另外三条公理）的集合就是well-
define的，这个可以查到略过。也有研究non-well defined set的，就是说不要求满足
全部三条公理的。当然，你也可以给出你自己的set的定义，哈哈。
concept
concepts
somet
axiomatical |
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k**e
发帖数: 2728 | 30 i heard about it... it seems big sale suddenly comes up.
i'll spend half a day next weekend to look around :) hopefully can get somet
hing within $50 budgets (hope to get a lot actually) |
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s***s
发帖数: 8 | 31 I got a prematch at the last minute. I finally made it. I promised God and
Jesus that I would write down my interviews experience. I fulfill my promise
even I prefer to shy away from spotlight. I would like to share about what
I have learned from my interviews. It may give some hints for people who
will apply in the future.
1. Be yourself- an original is always better than a copy (from a classroom
post). The better way is: be the best of yourself. How? Definitely dressing
nicely helps. But somet |
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j****e
发帖数: 245 | 32 Hi, 雪儿:
I do not think I have the qualification for guidance giving. However, I just
want to share a little of my own thoughts with you. Hope it might be something
helpful.
I am glad to know that you are interested in the area of psychology. I am sure
that you can try the possibility to switch to clinical psychology. However,
before that I do urge you to look a little deeper in the area and what you
want and would like to do, since it is a big decision to make. Once you know
for sure it is somet |
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w**********y
发帖数: 1691 | 33
we
200
This is similar as one question in my previous interview with Bloomberg.
I think the MLE is only the first step.
The following question should be " How about an estimator by some scaled
mean (actually, 2*sample_mean) or median? Which is better?"
The last question is, any other estimators? Which one is better and how to
evaluate a statistical estimator?
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Actually, the UMVU(uniformly minimum variance unbiased) estimator is (n+1)/n
*X_max. Somet |
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s******r
发帖数: 1524 | 34 if your phd major is someting has little future or you can prove your
interest in stat, it should be OK. But it is good to learn some information
from company. For big company, it varies between teams. |
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m***c
发帖数: 499 | 36 I said before, don't know, just heard that he is having fun somewhere, somet
ime, somehow. |
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