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Why is document.write considered a “bad practice”?
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It can block your page
document.write only works while the page is loading; If you call it after the page is done loading, it will overwrite the whole page.
This effectively means you have to call it from an inline script block - ...
Why use the yield keyword, when I could just use an ordinary IEnumerable?
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The benefit of iterator blocks is that they work lazily. So you can write a filtering method like this:
public static IEnumerable<T> Where<T>(this IEnumerable<T> source,
Func<T, bool> predi...
How can I draw vertical text with CSS cross-browser?
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Make sure your text is a block element ie use display:inline-block or similar
– James Westgate
Apr 22 '13 at 12:37
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Vsphere 6 集群上 安装 oracle rac 遇到的共享磁盘故障 - 数据库(内核) - ...
...udevtest udevinfo 等命令
在rehl 6 中要换成
udevadm -a -p /sys/block/sdc/sdc1
209715200
1677721600
比较一下 不同的，并且好记录的参数为 KERNEL ATTR{size}
把下列参数修改为
KERNEL=="sd*", BUS=="scsi", PROGRAM=="/sbin/scsi_id --whitelisted...
Append values to query string
...ke parsing, url encoding, ...:
string longurl = "http://somesite.com/news.php?article=1&lang=en";
var uriBuilder = new UriBuilder(longurl);
var query = HttpUtility.ParseQueryString(uriBuilder.Query);
query["action"] = "login1";
query["attempts"] = "11";
uriBuilder.Query = query.ToString();
long...
SourceKitService Terminated
...or add it to an existing one. As soon as the source contains one extension block, it will crash. This happens even on newly created projects.
My "solution" is to avoid extension in the sources I'm currently working on. I comment out the end of a class block and the beginning of the extension block....
Expand a div to fill the remaining width
...ery easy, but not at all obvious. You have to trigger something called a "block formatting context" (BFC), which interacts with floats in a specific way.
Just take that second div, remove the float, and give it overflow:hidden instead. Any overflow value other than visible makes the block it's se...
Transaction count after EXECUTE indicates a mismatching number of BEGIN and COMMIT statements. Previ
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If you have a TRY/CATCH block then the likely cause is that you are catching a transaction abort exception and continue. In the CATCH block you must always check the XACT_STATE() and handle appropriate aborted and uncommitable (doomed) transactions....
CSS3 background image transition
...pacity attribute to this and set it to 0.
#facebook a {
display:inline-block;
background:url(images/social) no-repeat 0px -30px;
opacity:0;
}
Now all you need is "opacity" under "a:hover" and set this to 1.
#facebook a:hover {
opacity:1;
}
Add the opacity transition attributes for ...
How to wait for a BackgroundWorker to cancel?
...id Cancel()
{
worker.CancelAsync();
_resetEvent.WaitOne(); // will block until _resetEvent.Set() call made
}
void worker_DoWork(object sender, DoWorkEventArgs e)
{
while(!e.Cancel)
{
// do something
}
_resetEvent.Set(); // signal that worker is done
}
...