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Non-Relational Database Design [closed]
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I think you have to consider that the non-relational DBMS differ a lot regarding their data model and therefore the conceptual data design will also differ a lot. In the thread Data Design in Non-Relational Databases of the NOSQL Google group the di...
Do C# Timers elapse on a separate thread?
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For System.Timers.Timer:
See Brian Gideon's answer below
For System.Threading.Timer:
MSDN Documentation on Timers states:
The System.Threading.Timer class makes
callbacks on a ThreadPool thread and
does not use the event model at all.
So indeed the ...
quick random row selection in Postgres
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You might want to experiment with OFFSET, as in
SELECT myid FROM mytable OFFSET floor(random()*N) LIMIT 1;
The N is the number of rows in mytable. You may need to first do a SELECT COUNT(*) to figure out the value of N.
Update (by Antony Hatchkins)
You must use floor here:
SELE...
Error inflating class fragment
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As hdemirchian said, make sure to use:
import android.support.v4.app.Fragment;
And also make sure that the Activity that is using the fragment(s) extends FragmentActivity instead of the regular Activity,
import android.support.v4.app.Fra...
Multiple models in a view
... using something like firebug (on firefox) and you will see something like id="LoginViewModel_Email" name = "LoginViewModel.Email", so in actual fact they are unique! A view model should be what you need, just post each page to a different URL and you should be fine
– Haroon
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How to resolve the C:\fakepath?
...to know your local machine's filesystem. It would be nice if all browsers did this.
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List View Filter Android
I have created a list view in android and I want to add edit text above the list and when the user enter text the list will be filtered according to user input
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How to test chrome extensions?
...e.tabs.query` to return predefined response
chrome.tabs.query.yields([
{id: 1, title: 'Tab 1'},
{id: 2, title: 'Tab 2'}
]);
// 2. inject our mocked chrome.* api into some environment
const context = {
chrome: chrome
};
// 3. run our extension code in this environment
const code = fs.readFi...
Catch checked change event of a checkbox
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<input type="checkbox" id="something" />
$("#something").click( function(){
if( $(this).is(':checked') ) alert("checked");
});
Edit: Doing this will not catch when the checkbox changes for other reasons than a click, like using the keyboar...
Socket.IO Authentication
... to use Socket.IO in Node.js, and am trying to allow the server to give an identity to each of the Socket.IO clients. As the socket code is outside the scope of the http server code, it doesn't have easy access to the request information sent, so I'm assuming it will need to be sent up during the c...