大约有 42,000 项符合查询结果（耗时：0.0433秒） [XML]
Rails 2.3-style plugins and deprecation warnings running task in Heroku
I'm upgrading to Rails 3.2, and running rake db:migrate gives me several errors of the form:
8 Answers
...
List distinct values in a vector in R
...
Do you mean unique:
R> x = c(1,1,2,3,4,4,4)
R> x
[1] 1 1 2 3 4 4 4
R> unique(x)
[1] 1 2 3 4
share
|
improve this answer
|
follo...
Unable to access JSON property with “-” dash
...
3 Answers
3
Active
...
Regex exactly n OR m times
...
Mark ByersMark Byers
683k155155 gold badges14681468 silver badges13881388 bronze badges
...
Do Swift-based applications work on OS X 10.9/iOS 7 and lower?
...troller = UIViewController()
var view = UIView(frame: CGRectMake(0, 0, 320, 568))
view.backgroundColor = UIColor.redColor()
controller.view = view
var label = UILabel(frame: CGRectMake(0, 0, 200, 21))
label.center = CGPointMake(160, 284)
label.textAlignment = NSTextAlignment...
When is an interface with a default method initialized?
...pot) differs from what's specified here. In particular, the Example 12.4.1-3 from this section covers interface initialization. The example as follows:
interface I {
int i = 1, ii = Test.out("ii", 2);
}
interface J extends I {
int j = Test.out("j", 3), jj = Test.out("jj", 4);
}
interface K ...
SQL multiple column ordering
...
1063
ORDER BY column1 DESC, column2
This sorts everything by column1 (descending) first, and then b...
How to convert a java.util.List to a Scala list
...cit conversion for you; e.g.:
var list = new java.util.ArrayList[Int](1,2,3)
list.foreach{println}
share
|
improve this answer
|
follow
|
...
Is there a way to use two CSS3 box shadows on one element?
...|
edited Nov 20 '14 at 20:35
Ryan
4,67022 gold badges3232 silver badges4141 bronze badges
answered Dec 1...
Android RatingBar change star colors [closed]
...
31 Answers
31
Active
...