大约有 351 项符合查询结果（耗时：0.0195秒） [XML]
Factors in R: more than an annoyance?
...
ordered factors are awesome, if I happen to love oranges and hate apples but don't mind grapes I don't need to manage some weird index to say so:
d <- data.frame(x = rnorm(20), f = sample(c("apples", "oranges", "grapes"), 20, replace = TRUE, prob = c(0.5, 0.25, 0.25)))...
How to read if a checkbox is checked in PHP?
...ng checkboxes as an array:
<input type="checkbox" name="food[]" value="Orange">
<input type="checkbox" name="food[]" value="Apple">
You should use in_array():
if(in_array('Orange', $_POST['food'])){
echo 'Orange was checked!';
}
Remember to check the array is set first, such as:
...
Any way to declare a size/partial border to a box?
...0 0 / 3px 100% no-repeat,
linear-gradient(to bottom, transparent 20%, orange 20%, orange 70%, transparent 70%) 100% 0 / 3px 100% no-repeat,
#ccc
}
<div class="box1">
Box1
</div>
<div class="box2">
Box2
</div>
<div class="box3">
Box3
</div>
...
CSS – why doesn’t percentage height work? [duplicate]
...
<div id="a" style="width: 100px; height: 200px; background-color: orange">
<div id="aa" style="width: 100px; height: 50%; background-color: blue"></div>
</div>
<div id="b" style="width: 100px; background-color: orange">
<div ...
UICollectionView Set number of columns
...Identifier: "Cell", for: indexPath)
cell.backgroundColor = UIColor.orange
return cell
}
}
#2. Using UICollectionViewFlowLayout's itemSize method
import UIKit
class CollectionViewController: UICollectionViewController {
let margin: CGFloat = 10
let cellsPerRow = ...
How to redirect to previous page in Ruby On Rails?
...sion with Jaime's method. For example, let's say I have objects Apple and Orange. I edit Apple and session[:return_to] gets set to the referer of that action. When I go to edit Oranges using the same code, session[:return_to] will not get set because it is already defined. So when I update the Ora...
With arrays, why is it the case that a[5] == 5[a]?
... pointer (and to what size of object). To put it another way, (1 apple + 2 oranges) = (2 oranges + 1 apple), but (1 apple + 2 oranges) != (1 orange + 2 apples).
– LarsH
Dec 1 '10 at 20:54
...
How to remove an item for a OR'd enum?
...fault value
RED = 2,
BLUE = 4,
GREEN = 8,
YELLOW = 16,
Orange = 18 // Combined value of RED and YELLOW
}
In these cases an extension method such as this might come in handy:
public static Colour UnSet(this Colour states, Colour state)
{
if ((int)states == 0)
retur...
Smooth GPS data
...g something wrong...(Below is image url, blue is filtered locations' path, orange are raw locations) app.box.com/s/w3uvaz007glp2utvgznmh8vlggvaiifk
– umesh
Apr 28 '15 at 13:43
...
How to semantically add heading to a list
...<li>Apples</li>
<li>Bananas</li>
<li>Oranges</li>
</ul>
</section>
<!-- anything here is part of the "About Fruits" section but does not
belong to the "Fruits I Like" section. -->
...