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Returning first x items from array
...ray_slice returns a slice of an array
$sliced_array = array_slice($array, 0, 5)
is the code you want in your case to return the first five elements
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Get Substring - everything before certain char
...exOf(stopAt, StringComparison.Ordinal);
if (charLocation > 0)
{
return text.Substring(0, charLocation);
}
}
return String.Empty;
}
}
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CSS performance relative to translateZ(0)
...ng' the GPU to think that an element is 3D by using transform: translateZ(0) to speed up animations and transitions. I was wondering if there are implications to using this transform in the following manner:
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Java 8: performance of Streams vs Collections
...Vanilla.N)
public class StreamVsVanilla {
public static final int N = 10000;
static List<Integer> sourceList = new ArrayList<>();
static {
for (int i = 0; i < N; i++) {
sourceList.add(i);
}
}
@Benchmark
public List<Double> va...
Android ImageView Zoom-in and Zoom-Out
...e Drawable image;
ImageButton img,img1;
private int zoomControler=20;
public Zoom(Context context){
super(context);
image=context.getResources().getDrawable(R.drawable.j);
//image=context.getResources().getDrawable(R.drawable.icon);
setF...
Why does ~True result in -2?
...
240
int(True) is 1.
1 is:
00000001
and ~1 is:
11111110
Which is -2 in Two's complement1
1 Fl...
How does Duff's device work?
...re's the Wikipedia example with some notations.
Let's say you're copying 20 bytes. The flow control of the program for the first pass is:
int count; // Set to 20
{
int n = (count + 7) / 8; // n is now 3. (The "while" is going
// ...
How can I calculate the time between 2 Dates in typescript
...
160
Use the getTime method to get the time in total milliseconds since 1970-01-01, and subtract thos...
Running a cron job at 2:30 AM everyday
How to configure a cron job to run every night at 2:30? I know how to make it run at 2, but not 2:30.
6 Answers
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How to get a pixel's x,y coordinate color from an image?
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202
Building on Jeff's answer, your first step would be to create a canvas representation of your P...