大约有 47,000 项符合查询结果（耗时：0.0758秒） [XML]
Test if number is odd or even
...ession which will return true if $number is even, false if odd:
$number % 2 == 0
Works for every integerPHP value, see as well Arithmetic OperatorsPHP.
Example:
$number = 20;
if ($number % 2 == 0) {
print "It's even";
}
Output:
It's even
...
Position Absolute + Scrolling
...
.container {
position: relative;
border: solid 1px red;
height: 256px;
width: 256px;
overflow: auto;
float: left;
margin-right: 16px;
}
.inner {
position: relative;
height: auto;
}
.full-height {
position: absolute;
top: 0;
left: 0;
right: 128px;
b...
how to use “AND”, “OR” for RewriteCond on Apache?
...
120
This is an interesting question and since it isn't explained very explicitly in the documentati...
Run a callback only if an attribute has changed in Rails
...
200
Rails 5.1+
class Page < ActiveRecord::Base
before_save :do_something, if: :will_save_cha...
What's the difference between ContentControl and ContentPresenter?
...4
NirNir
27.7k99 gold badges6262 silver badges9898 bronze badges
...
Get Base64 encode file-data from Input Form
...
121
+50
It's ent...
Visual Studio SP1 error: silverlight_sdk.msi is unavailable
I'm trying to install the SP1 for Visual Studio 2010. I first installed the beta and it worked fine. Then I used the web platform installer to install the SQL CE Compact 4, which I assume installed the full SP1 after (this installation took over 12 hours, so I canceled it). The web platform installe...
Why is the parent div height zero when it has floated children
...
253
Content that is floating does not influence the height of its container. The element contains ...
how to set desired language in git-gui?
...
92
For Windows users the are two choices as well:
1) Set the LANG environment variable to en.
a) ...
Increase number of axis ticks
... scale_x_continuous and/or scale_y_continuous. For example:
library(ggplot2)
dat <- data.frame(x = rnorm(100), y = rnorm(100))
ggplot(dat, aes(x,y)) +
geom_point()
Gives you this:
And overriding the scales can give you something like this:
ggplot(dat, aes(x,y)) +
geom_point() +
scal...