大约有 16,000 项符合查询结果（耗时：0.0332秒） [XML]
How can I check if a string is null or empty in PowerShell?
... null strings passed to a commandlet or function don't stay null. They get converted to empty strings. See the Microsoft Connect bug at connect.microsoft.com/PowerShell/feedback/details/861093/….
– JamieSee
Dec 11 '14 at 17:59
...
Getting the current page
...no UIScrollView property for the current page. You can calculate it with:
int page = scrollView.contentOffset.x / scrollView.frame.size.width;
If you want to round up or down to the nearest page, use:
CGFloat width = scrollView.frame.size.width;
NSInteger page = (scrollView.contentOffset.x + (0....
android ellipsize multiline textview
...s TextView {
private static final String ELLIPSIS = "...";
public interface EllipsizeListener {
void ellipsizeStateChanged(boolean ellipsized);
}
private final List<EllipsizeListener> ellipsizeListeners = new ArrayList<EllipsizeListener>();
private boolean i...
scipy.misc module has no attribute imread?
...mageio.core.util.Array. If you want/need a numpy.ndarray and don't want to convert it, use matplotlib.pyplot.imread, as it also returns a numpy.ndarray.
– Stefan
Jan 20 '19 at 14:55
...
Generate random numbers uniformly over an entire range
I need to generate random numbers within a specified interval, [max;min].
17 Answers
1...
Working with Enums in android
... 0),
FEMALE("Female", 1);
private String stringValue;
private int intValue;
private Gender(String toString, int value) {
stringValue = toString;
intValue = value;
}
@Override
public String toString() {
return stringValue;
}
}
Then to use th...
What is the bit size of long on 64-bit Windows?
...me that long are not 64 bits on 64 bit machines and I should always use int . This did not make sense to me. I have seen docs (such as the one on Apple's official site) say that long are indeed 64 bits when compiling for a 64-bit CPU. I looked up what it was on 64-bit Windows and found
...
What is the format specifier for unsigned short int?
...u , x , X , or n conversion
specifier applies to an argument with type pointer to short or
unsigned short.
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Pointer to class data member “::*”
...
It's a "pointer to member" - the following code illustrates its use:
#include <iostream>
using namespace std;
class Car
{
public:
int speed;
};
int main()
{
int Car::*pSpeed = &Car::speed;
Car c1;
c1.s...
Sending data back to the Main Activity in Android
...a back to the main Activity using setResult. The setResult method takes an int result value and an Intent that is passed back to the calling Activity.
Intent resultIntent = new Intent();
// TODO Add extras or a data URI to this intent as appropriate.
resultIntent.putExtra("some_key", "String data")...