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Get screen width and height in Android
...rics();
getWindowManager().getDefaultDisplay().getMetrics(displayMetrics);
int height = displayMetrics.heightPixels;
int width = displayMetrics.widthPixels;
In a view you need to do something like this:
((Activity) getContext()).getWindowManager()
.getDefaultDisplay()
...
Breaking out of a nested loop
...o, but that is ugly, and not always possible. You can also place the loops into a method (or an anon-method) and use return to exit back to the main code.
// goto
for (int i = 0; i < 100; i++)
{
for (int j = 0; j < 100; j++)
{
goto Foo; // yeuck!
...
Enum “Inheritance”
... @zionpi yes but note that (I believe) the standard switch gets compiled into same IL code as a full if, else if, else block would: which I think has a better better syntax anyway. You do loose ability for resharper / VS to autocomplete all the case statements, but I think that's not the end of th...
How to create a sub array from another array in Java?
...
You can use
JDK > 1.5
Arrays.copyOfRange(Object[] src, int from, int to)
Javadoc
JDK <= 1.5
System.arraycopy(Object[] src, int srcStartIndex, Object[] dest, int dstStartIndex, int lengthOfCopiedIndices);
Javadoc
...
How do I choose grid and block dimensions for CUDA kernels?
...One part is easy to quantify, the other is more empirical.
Hardware Constraints:
This is the easy to quantify part. Appendix F of the current CUDA programming guide lists a number of hard limits which limit how many threads per block a kernel launch can have. If you exceed any of these, your kernel ...
Gridview height gets cut
... ExpandableHeightGridView(Context context, AttributeSet attrs,
int defStyle)
{
super(context, attrs, defStyle);
}
public boolean isExpanded()
{
return expanded;
}
@Override
public void onMeasure(int widthMeasureSpec, int heightMeasureSpec)
...
How does a hash table work?
...) and calculates a number from it.
For simplicity, let's say that it just converts each letter and symbol into a number and sums them all up. In reality, it's a lot more complicated than that, but let's leave it at that for now.
The beauty of such an algorithm is that if you feed the same input in...
Combining C++ and C - how does #ifdef __cplusplus work?
...acy C code. We've started writing in C++, with the intent to eventually convert the legacy code, as well. I'm a little confused about how the C and C++ interact. I understand that by wrapping the C code with extern "C" the C++ compiler will not mangle the C code's names, but I'm not ent...
Plotting time in Python with Matplotlib
...
You must first convert your timestamps to Python datetime objects (use datetime.strptime). Then use date2num to convert the dates to matplotlib format.
Plot the dates and values using plot_date:
dates = matplotlib.dates.date2num(list_of_d...
What's the maximum value for an int in PHP?
...libraries that allow you to work with very big numbers, what's the largest int value you can store in PHP?
8 Answers
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