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What is a callback function?
...e.
Contrived example
Why would you want to do this? Let's say there is a service you need to invoke. If the service returns immediately, you just:
Call it
Wait for the result
Continue once the result comes in
For example, suppose the service were the factorial function. When you want the value...
How to check internet access on Android? InetAddress never times out
...ery fast. It needs to run in a separate task though (e.g. ScheduledExecutorService or AsyncTask).
Possible Questions
Is it really fast enough?
Yes, very fast ;-)
Is there no reliable way to check internet, other than testing something on the internet?
Not as far as I know, but let me know, and ...
linux 通过bind下搭建DNS Server - 更多技术 - 清泛网 - 专注C/C++及内核技术
...#设置开机启动
chkconfig named --level 235 on
#开启dns 服务器
service named start
#如已经开启请使用下面的命令重启
service named restart
然后在终端输入
nslookup
#enter进入nslookup的会话后直接输入需要测试的域名看看返回的结果是否正确...
How do I see if Wi-Fi is connected on Android?
...ailable.
ConnectivityManager connManager = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo mWifi = connManager.getNetworkInfo(ConnectivityManager.TYPE_WIFI);
if (mWifi.isConnected()) {
// Do whatever
}
NOTE: It should be noted (for us n00bies here) that you ...
Can I do a synchronous request with volley?
Imagine I'm in a Service that already has a background thread. Can I do a request using volley in that same thread, so that callbacks happen synchronously?
...
Unable to login to SQL Server + SQL Server Authentication + Error: 18456
... Valid login but server access failure
13 SQL Server service paused
18 Change password required
Well I'm not finished yet, what would you do in case of error:
2007-05-17 00:12:00.34 Logon Login failed for user '<user name>'.
You can see there is no...
Differences between SP initiated SSO and IDP initiated SSO
...ly, the IdP retrieves attributes from the user data store.
The IdP’s SSO service returns an HTML form to the browser with a SAML response containing the authentication assertion and any additional attributes. The browser automatically posts the HTML form back to the SP.
SP Initiated SSO
From Pi...
No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin '…' is therefor
...ning, from a page at www.example.com, you can only make (AJAX) requests to services located at exactly the same domain, in that case, exactly www.example.com (not example.com - without the www - or whatever.example.com).
In your case, your Ajax code is trying to reach a service in http://wordicious....
How do I make a request using HTTP basic authentication with PHP curl?
I'm building a REST web service client in PHP and at the moment I'm using curl to make requests to the service.
11 Answers
...
Parse RSS with jQuery
...$.ajax({
url: document.location.protocol + '//ajax.googleapis.com/ajax/services/feed/load?v=1.0&num=10&callback=?&q=' + encodeURIComponent(url),
dataType: 'json',
success: function(data) {
callback(data.responseData.feed);
}
});
}
...