大约有 16,800 项符合查询结果（耗时：0.0272秒） [XML]
Animate change of view background color on Android
... 0xff78c5f9);
backgroundColorAnimator.setDuration(300);
backgroundColorAnimator.start();
You can also load the animation definition from a xml using a AnimatorInflater like XMight does in Android objectAnimator animate backgroundCo...
How to execute a raw update sql with dynamic binding in rails
...t = ActiveRecord::Base.connection.raw_connection.prepare("update table set f1=? where f2=? and f3=?")
st.execute(f1, f2, f3)
st.close
I'm not sure if there are other ramifications to doing this (connections left open, etc). I would trace the Rails code for a normal update to see what it's doing as...
Applicatives compose, monads don't
...d that generalizes to any applicative:
app :: (Applicative f, Applicative f1) => f (f1 (a -> b)) -> f (f1 a) -> f (f1 b)
But there is no sensible definition of
join :: [Int -> [Int -> a]] -> [Int -> a]
If you're unconvinced of this, consider this expression:
join [\x -...
How to append rows to an R data frame
...ehensive insight than system.time:
library(microbenchmark)
microbenchmark(f1(1000), f3(1000), f4(1000), times = 5)
# Unit: milliseconds
# expr min lq median uq max neval
# f1(1000) 1024.539618 1029.693877 1045.972666 1055.25931 1112.769176 5
# f3(100...
best way to preserve numpy arrays on disk
...)
with h5py.File( 'data.pkl.{}'.format(compression), 'w' ) as h5f:
h5f.create_dataset('data', data=data[key])
time_tot = time.time() - time_start
sizes[key][compression] = ( os.path.getsize( 'data.pkl.{}'.format(compression) ) * 10**(-6), time_tot)...
Why do you program in assembly? [closed]
... 90% of the mass comes from strong force binding energy, and the rest from quarks. That's E=mc2 in action. Here's a summary.
For all of the above, the applications are not designed or written 100% in assembly -- not even close. But when people really need speed, they focus on writing the key pa...
How to get first record in each group using Linq
...
var res = from element in list
group element by element.F1
into groups
select groups.OrderBy(p => p.F2).First();
share
|
improve this answe...
Disable double-tap “zoom” option in browser on touch devices
...ation;
}
From the touch-action docs (emphasis mine):
manipulation
Enable panning and pinch zoom gestures, but disable additional non-standard gestures such as double-tap to zoom.
This value works on Android and on iOS.
sh...
moveCamera with CameraUpdateFactory.newLatLngBounds crashes
...
The solution is simpler than that....
// Pan to see all markers in view.
try {
this.gmap.moveCamera(CameraUpdateFactory.newLatLngBounds(bounds, 50));
} catch (IllegalStateException e) {
// layout not yet initialized
final View mapView = getFragmentManage...
Fill between two vertical lines in matplotlib
...
It sounds like you want axvspan, rather than one of the fill between functions. The differences is that axvspan (and axhspan) will fill up the entire y (or x) extent of the plot regardless of how you zoom.
For example, let's use axvspan to highlight th...