大约有 35,100 项符合查询结果（耗时：0.0447秒） [XML]
What would cause an algorithm to have O(log log n) complexity?
...there are typically two main routes that will arrive at this runtime.
Shrinking by a Square Root
As mentioned in the answer to the linked question, a common way for an algorithm to have time complexity O(log n) is for that algorithm to work by repeatedly cut the size of the input down by some consta...
Any way to write a Windows .bat file to kill processes? [closed]
Every time I turn on my company-owned development machine, I have to kill 10+ processes using the Task Manager or any other process management app just to get decent performance out of my IDE. Yes, these are processes from programs that my company installs on my machine for security and compliance....
How do you find the current user in a Windows environment?
... Oct 22 '09 at 14:06
George Stocker
53.8k2929 gold badges165165 silver badges230230 bronze badges
answered Oct 22 '09 at 13:41
...
How to make a phone call using intent in Android?
I'm using the following code to make a call in Android but it is giving me security exception please help.
20 Answers
...
How can I add a class to a DOM element in JavaScript?
...
Peter Mortensen
26.5k2121 gold badges9292 silver badges122122 bronze badges
answered Jul 12 '09 at 4:30
Darko ZDarko Z
...
How to insert a value that contains an apostrophe (single quote)?
...ting should be a rare occurrence. In code there are techniques and frameworks (depending on your stack) that take care of escaping special characters, SQL injection, etc.
share
|
improve this answer...
Positive Number to Negative Number in JavaScript?
...um is 3,
then 3 < 3-1 => false
so slideNum remains positive??
It looks more like a logic error to me.
share
|
improve this answer
|
follow
|
...
Short circuit Array.forEach like calling break
...Each method in JavaScript? I've tried return; , return false; and break . break crashes and return does nothing but continue iteration.
...
Convert a matrix to a 1 dimensional array
...
nico
46.3k1515 gold badges8080 silver badges109109 bronze badges
answered Sep 29 '10 at 16:23
SpacedmanSpacedm...
Find the day of a week
...a.frame(date=c("2012-02-01", "2012-02-01", "2012-02-02"))
df$day <- weekdays(as.Date(df$date))
df
## date day
## 1 2012-02-01 Wednesday
## 2 2012-02-01 Wednesday
## 3 2012-02-02 Thursday
Edit: Just to show another way...
The wday component of a POSIXlt object is the numeric wee...