大约有 15,000 项符合查询结果（耗时：0.0248秒） [XML]
Standard deviation of a list
...n and standard deviation of 1st, 2nd,... digits of several (Z) lists. For example, I have
8 Answers
...
Best algorithm for detecting cycles in a directed graph [closed]
...rjan's strongly connected components algorithm has O(|E| + |V|) time complexity.
For other algorithms, see Strongly connected components on Wikipedia.
share
|
improve this answer
|
...
Copying text outside of Vim with set mouse=a enabled
After enabling set mouse=a , text copied inside of Vim will not paste outside of Vim. Does anybody know of a way to fix this?
...
What does the comma operator , do?
...
The expression:
(expression1, expression2)
First expression1 is evaluated, then expression2 is evaluated, and the value of expression2 is returned for the whole expression.
...
Updating packages in Emacs
... *Packages* buffer (and also update the list of packages), and then type U x.
package-refresh-contents unconditionally tries to download a package list from all repos you've added to package-archives; package-archive-contents is non nil if you have already downloaded the package list.
ELPA is the...
Draw line in UIView
...draw a horizontal line in a UIView. What is the easiest way to do it. For example, I want to draw a black horizontal line at y-coord=200.
...
Python “extend” for a dictionary
What is the best way to extend a dictionary with another one while avoiding the use of a for loop? For instance:
7 Answer...
iPhone - Get Position of UIView within entire UIWindow
...e screen's and device coordinate systems are different and should not be mixed up with window coordinates.
share
|
improve this answer
|
follow
|
...
Showing data values on stacked bar chart in ggplot2
...asily be stacked by using position = position_stack(vjust = 0.5) in geom_text.
ggplot(Data, aes(x = Year, y = Frequency, fill = Category, label = Frequency)) +
geom_bar(stat = "identity") +
geom_text(size = 3, position = position_stack(vjust = 0.5))
Also note that "position_stack() and posi...
What does [object Object] mean?
... in the comments, you should use the tools included in browsers like Firefox or Chrome to introspect objects by doing console.log(whichIsVisible()) instead of alert.
Sidenote: IDs should not start with digits.
share
...