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PostgreSQL - fetch the row which has the Max value for a column
I'm dealing with a Postgres table (called "lives") that contains records with columns for time_stamp, usr_id, transaction_id, and lives_remaining. I need a query that will give me the most recent lives_remaining total for each usr_id
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Error: Can't set headers after they are sent to the client
...ode.js's http.ServerResponse (read the http.js source). You are allowed to call res.setHeader(name, value) as often as you want until you call res.writeHead(statusCode). After writeHead, the headers are baked in and you can only call res.write(data), and finally res.end(data).
The error "Error: Can'...
Facebook Graph API, how to get users email?
...re using Facebook connect by passing scope=email in the get string of your call to the Auth Dialog.
I'd recommend using an SDK instead of file_get_contents as it makes it far easier to perform the Oauth authentication.
shar...
What is ViewModel in MVC?
...se) it wouldn’t differ much from my example above. Create a view model, call it for example EditEmployeeViewModel. Only have the data that you want to edit in this view model, like first name and last name. Edit the data and click the submit button. I wouldn’t worry too much about the Id field ...
Complete Working Sample of the Gmail Three-Fragment Animation Scenario?
...hat I'll refer to as "the Gmail three-fragment animation" scenario. Specifically, we want to start with two fragments, like this:
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android get all contacts
...y extends Activity
implements LoaderManager.LoaderCallbacks<Cursor> {
private static final int CONTACTS_LOADER_ID = 1;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout....
Chrome: timeouts/interval suspended in background tabs?
...cted) setTimeout is not very accurate but for most appliances not dramatically inaccurate. Now if I run the test in in Chrome and let it run in a background tab (so, switching to another tab and browse on there), returning to the test and inspecting te results (if the test finished) they are drama...
Receive result from DialogFragment
...ou show the dialog, and then when your dialog is finished, from it you can call getTargetFragment().onActivityResult(getTargetRequestCode(), ...), and implement onActivityResult() in the containing fragment.
It seems like an abuse of onActivityResult(), especially as it doesn't involve activities a...
Hamcrest compare collections
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If you really intend to perform an order-insensitive comparison, you can call the containsInAnyOrder varargs method and provide values directly:
assertThat(actual.getList(), containsInAnyOrder("item1", "item2"));
(Assuming that your list is of String, rather than Agent, for this example.)
If y...
Calling JavaScript Function From CodeBehind
Can someone provide good examples of calling a JavaScript function From CodeBehind and Vice-versa?
21 Answers
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