大约有 48,000 项符合查询结果（耗时：0.0283秒） [XML]
Workflow for statistical analysis and report writing
... I have started numbering the scripts, so it's completely obvious in which order they should be run. (If I'm feeling really fancy I'll sometimes make it so that the exploration script will call the cleaning script which in turn calls the download script, each doing the minimal work necessary - usua...
Please explain some of Paul Graham's points on Lisp
...
Highly active question. Earn 10 reputation in order to answer this question. The reputation requirement helps protect this question from spam and non-answer activity.
...
Advantages and disadvantages of GUID / UUID database keys
...a clash.
Disadvantages:
Larger space use, but space is cheap(er)
Can't order by ID to get the insert order.
Can look ugly in a URL, but really, WTF are you doing putting a REAL DB key in a URL!? (This point disputed in comments below)
Harder to do manual debugging, but not that hard.
Personall...
Query to list all stored procedures
...IF', -- inline table-valued functions
'TF' -- table-valued functions
)
ORDER BY type, name
share
|
improve this answer
|
follow
|
...
What and where are the stack and heap?
...ion is called. The stack is always reserved in a LIFO (last in first out) order; the most recently reserved block is always the next block to be freed. This makes it really simple to keep track of the stack; freeing a block from the stack is nothing more than adjusting one pointer.
The heap is me...
Secure hash and salt for PHP passwords
...nksys, Dlink etc). A very good explanation of how
this works is here. In order to retrieve password from hash, you will
need to know the password as well as salt (network name). Church of
Wifi has already pre-computed hash tables which has top 1000 SSIDs and
about 1 million passwords. The si...
Create a matrix of scatterplots (pairs() equivalent) in ggplot2
...
Highly active question. Earn 10 reputation in order to answer this question. The reputation requirement helps protect this question from spam and non-answer activity.
...
Why do we need entity objects? [closed]
... application. I want my application to be thinking in terms of Customers, Orders and Items, not a technology like DataSets, DataTables and DataRows...cuz who knows how long those will be around.
I agree that there is always a certain amount of coupling, but I prefer that coupling to reach upward...
What is the difference between the operating system and the kernel? [closed]
...ble at this point of time.OS is responsible to handle that system calls in order to utilize the resource.*
share
|
improve this answer
|
follow
|
...
Access lapply index names inside FUN
...e indices of x, but also pass in x and the names of x. As you can see, the order of the function arguments can be anything - lapply will pass in the "element" (here the index) to the first argument not specified among the extra ones. In this case, I specify y and n, so there's only i left...
Which ...