大约有 9,000 项符合查询结果（耗时：0.0238秒） [XML]
Responsive image align center bootstrap 3
...tly easy fix. Because .img-responsive from Bootstrap already sets display: block, you can use margin: 0 auto to center the image:
.product .img-responsive {
margin: 0 auto;
}
share
|
improve t...
Why doesn't margin:auto center an image?
...
Because your image is an inline-block element. You could change it to a block-level element like this:
<img src="queuedError.jpg" style="margin:auto; width:200px;display:block" />
and it will be centered.
...
Why can't I use the 'await' operator within the body of a lock statement?
...s mistake.
call to Monitor.Exit within ExitDisposable.Dispose seems to block indefinitely (most of the time) causing deadlocks as other threads attempt to acquire the lock. I suspect the unreliability of my work around and the reason await statements are not allowed in lock statement are somehow...
Row count with PDO
... statements around. What is the best way to get the row count using PDO in PHP? Before using PDO, I just simply used mysql_num_rows .
...
What does the “map” method do in Ruby?
...
The map method takes an enumerable object and a block, and runs the block for each element, outputting each returned value from the block (the original object is unchanged unless you use map!):
[1, 2, 3].map { |n| n * n } #=> [1, 4, 9]
Array and Range are enumerable ...
How to remove only underline from a:before?
... of the inline element from display:inline (the default) to display:inline-block:
#test p a:before {
color: #B2B2B2;
content: "► ";
display:inline-block;
}
This is because the CSS specs say:
When specified on or propagated to an inline element, it affects all the boxes generated...
Context switches much slower in new linux kernels
...
Perhaps what got slower is futex, the building block for condition variables. This will shed some light:
strace -r ./test_latency 0 1 &> test_latency_strace & sleep 8 && killall test_latency
then
for i in futex nanosleep rt_sig;do echo $i;grep $i te...
make an html svg object also a clickable link
...bject> tag, use:
pointer-events: none;
Note: Users which have the Ad Blocker plugin installed get a tab-like [Block] at the upper right corner upon hovering (the same as a flash banner gets). By settings this css, that'll go away as well.
http://jsfiddle.net/energee/UL9k9/
...
Why invoke Thread.currentThread.interrupt() in a catch InterruptException block?
Why invoke the method Thread.currentThread.interrupt() in the catch block?
5 Answers
...
What is Double Brace initialization in Java?
...d from the specified class (the outer braces), and provides an initialiser block within that class (the inner braces). e.g.
new ArrayList<Integer>() {{
add(1);
add(2);
}};
Note that an effect of using this double brace initialisation is that you're creating anonymous inner classes. Th...