大约有 30,000 项符合查询结果(耗时:0.0276秒) [XML]
Remove final character from string [duplicate]
... Looking at the examples, it is worth to mention that lists are mutable and that list.pop() method is the way to go when dealing with lists, as it removes the last item in place O(1), while [:-1] slicing creates a copy of a list without the last element in O(n-1) time plus O(n-1) space. ...
Place a button right aligned
... answered Jul 9 '11 at 2:44
mu is too shortmu is too short
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Can we add a inside H1 tag?
... answered Sep 23 '11 at 4:30
mu is too shortmu is too short
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Returning multiple objects in an R function [duplicate]
How can I return multiple objects in an R function? In Java, I would make a Class, maybe Person which has some private variables and encapsulates, maybe, height , age , etc.
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Android : difference between invisible and gone?
... edited Jun 20 at 9:12
Community♦
111 silver badge
answered Apr 22 '14 at 5:25
Pankaj KumarPankaj Kuma...
ImportError: No module named PIL
...
On some installs of PIL, You must do
import Image
instead of import PIL (PIL is in fact not always imported this way). Since import Image works for you, this means that you have in fact installed PIL.
Having a different name for the library and the ...
How to use underscore.js as a template engine?
...
community wiki
17 revs, 4 users 94%Shanimal
...
How to clear a chart from a canvas so that hover events cannot be triggered?
...nswered Jul 31 '14 at 16:15
neaumusicneaumusic
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Overriding a JavaScript function while referencing the original
...e not defining anything just returning a function.
– Muhammad Umer
Aug 4 '13 at 12:09
@MuhammadUmer You're right that ...
Apply a function to every row of a matrix or a data frame
...value will be simplified to a vector):
bvnormdens <- function(x=c(0,0),mu=c(0,0), sigma=c(1,1), rho=0){
exp(-1/(2*(1-rho^2))*(x[1]^2/sigma[1]^2+
x[2]^2/sigma[2]^2-
2*rho*x[1]*x[2]/(sigma[1]*sigma[2]))) *
1/(2*pi*sigma[1]*sigma[2]*s...
