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How does Angular $q.when work?
... mean the then callback of it will be passed the promise result param send by resolve?
– Onur Topal
Oct 17 '14 at 11:18
3
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Chaining multiple filter() in Django, is this a bug?
...
The way I understand it is that they are subtly different by design (and I am certainly open for correction): filter(A, B) will first filter according to A and then subfilter according to B, while filter(A).filter(B) will return a row that matches A 'and' a potentially different row...
How to get current time in milliseconds in PHP?
...
Use microtime. This function returns a string separated by a space. The first part is the fractional part of seconds, the second part is the integral part. Pass in true to get as a number:
var_dump(microtime()); // string(21) "0.89115400 1283846202"
var_dump(microtime(true)...
How do I launch the Android emulator from the command line?
...ut AVD management through GUI and through command line.
Run the AVD either by using command emulator -avd <name> or through previously launched GUI. Wait until the emulator fully loads, it takes some time. You can read about additional options here.
Now you have to install the application to y...
IEnumerable vs List - What to Use? How do they work?
...way.
Whenever I'm "stacking" LINQ expressions, I use IEnumerable, because by only specifying the behavior I give LINQ a chance to defer evaluation and possibly optimize the program. Remember how LINQ doesn't generate the SQL to query the database until you enumerate it? Consider this:
public IEnum...
When should use Readonly and Get only properties
...utside the class.
You can however change the value using methods provided by your class :
public class FuelConsumption {
private double fuel;
public double Fuel
{
get { return this.fuel; }
}
public void FillFuelTank(double amount)
{
this.fuel += amount;
...
How do I automatically update a timestamp in PostgreSQL
...tamp
)
Note that the value for that column can explicitly be overwritten by supplying a value in the INSERT statement. If you want to prevent that you do need a trigger.
You also need a trigger if you need to update that column whenever the row is updated (as mentioned by E.J. Brennan)
Note tha...
Best way to show a loading/progress indicator?
...Wait while loading...");
progress.setCancelable(false); // disable dismiss by tapping outside of the dialog
progress.show();
// To dismiss the dialog
progress.dismiss();
OR
ProgressDialog.show(this, "Loading", "Wait while loading...");
Read more here.
By the way, Spinner has a different meanin...
Save Screen (program) output to a file
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@aaa90210 It's ctrl-a followed by a separate press of h for a hardcopy. ctrl-a followed by a separate press of shift-h starts a complete log file.
– James
Mar 27 '18 at 9:47
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Python Selenium accessing HTML source
..., much more compact that the other, still valid, alternative (find_element_by_xpath("//*").get_attribute("outerHTML")(
– 5agado
Mar 28 '14 at 14:16
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