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C# How can I check if a URL exists/is valid?
...
// fine, no content downloaded
string s1 = client.DownloadString("http://google.com");
// throws 404
string s2 = client.DownloadString("http://google.com/silly");
}
You would try/catch around the DownloadString to check for errors; no error? It exists...
With C# 2.0 (VS2005):
...
PHP best way to MD5 multi-dimensional array?
...ference. You may see the results of the test with this live script here:
http://nathanbrauer.com/playground/serialize-vs-json.php
http://nathanbrauer.com/playground/plain-text/serialize-vs-json.php
Now, one thing to note is array(1,2,3) will produce a different MD5 as array(3,2,1). If this is N...
Running V8 Javascript Engine Standalone
...ith code for building a console. Here is how to build this:
$> svn co http://v8.googlecode.com/svn/trunk v8-trunk
...
$> cd v8-trunk
$> scons
$> g++ ./samples/shell.cc -o v8-shell -I include libv8.a
Now, we have a standalone binary called v8-shell.
Running the console:
$> ./v8...
How to get a file or blob from an object URL?
...the best/only way to do this is with an async xhr2 call:
var xhr = new XMLHttpRequest();
xhr.open('GET', 'blob:http%3A//your.blob.url.here', true);
xhr.responseType = 'blob';
xhr.onload = function(e) {
if (this.status == 200) {
var myBlob = this.response;
// myBlob is now the blob that th...
Loadbalancing web sockets
... a 2 core, 4GB RAM VM.
Also note that you can do L7 load-balancing on the HTTP path announced during the initial WebSocket handshake. In that case the load balancer has to maintain state (which source IP-port pair is going to which backend node). It will probably scale to millions of connections ne...
How to reference style attributes from a drawable?
...
Starting with lollipop (API 21) this feature is supported, see
https://code.google.com/p/android/issues/detail?id=26251
However, if you're targeting devices without lollipop, don't use it, as it will crash, use the workaround in the accepted answer instead.
...
What is the opposite of :hover (on mouse leave)?
...and chrome */
}
ul li a:hover {
color:black;
cursor: pointer;
}
http://jsfiddle.net/spacebeers/sELKu/3/
The definition of hover is:
The :hover selector is used to select elements when you mouse over
them.
By that definition the opposite of hover is any point at which the mouse is...
How can I find the data structure that represents mine layout of Minesweeper in memory?
...down by CreateWindowEx and RegisterClass calls.
To read:
CreateWindowEx http://msdn.microsoft.com/en-us/library/ms632680%28VS.85%29.aspx
RegisterClass http://msdn.microsoft.com/en-us/library/ms633586%28VS.85%29.aspx
Petzold's Chapter 3 "Windows and Messages"
Open up IDA, Imports window, find "...
how to read System environment variable in Spring applicationContext
...to.my.BeanClass">
<!-- can be overridden with -Dtest.target.host=http://whatever.com -->
<constructor-arg value="#{systemProperties['test.target.host'] ?: 'http://localhost:18888'}"/>
</bean>
sh...
Changing user agent on urllib2.urlopen
... User-Agent header, which is used by a browser to identify itself – some HTTP servers only allow requests coming from common browsers as opposed to scripts. For example, Mozilla Firefox may identify itself as "Mozilla/5.0 (X11; U; Linux i686) Gecko/20071127 Firefox/2.0.0.11", while urllib2‘s def...