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What is the 'instanceof' operator used for in Java?
...d to test if an object (instance) is a subtype of a given Type.
Imagine:
interface Domestic {}
class Animal {}
class Dog extends Animal implements Domestic {}
class Cat extends Animal implements Domestic {}
Imagine a dog object, created with Object dog = new Dog(), then:
dog instanceof Domestic...
Android equivalent of NSUserDefaults in iOS
...
This is the most simple solution I've found:
//--Init
int myvar = 12;
//--SAVE Data
SharedPreferences preferences = context.getSharedPreferences("MyPreferences", Context.MODE_PRIVATE);
SharedPreferences.Editor editor = preferences.edit();
editor.putInt("var1", myvar);
editor...
Android ListView Divider
... 1px is going to be incredibly small on an xxhdpi device, and at some point (as devices continue to get higher density) will be too small to see at all. Dip avoids this, and another solution for ldpi devices is to use 1px in the values-ldpi folder, and 1dip for higher densities.
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Switching between Android Navigation Drawer image and Up caret when using fragments
...r);
super.onDestroy();
}
private void syncActionBarArrowState() {
int backStackEntryCount =
getSupportFragmentManager().getBackStackEntryCount();
mDrawerToggle.setDrawerIndicatorEnabled(backStackEntryCount == 0);
}
3) Both indicators to act according to their shape
@Override...
Is there Selected Tab Changed Event in the standard WPF Tab Control
...Control_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
int i = 34;
}
if I set a breakpoint on the i = 34 line, it ONLY breaks when i change tabs, even when the tabs have child elements and one of them is selected.
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Using numpy to build an array of all combinations of two arrays
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FYI: seems to have made it into the scikit-learn package at from sklearn.utils.extmath import cartesian
– Gus
Sep 13 '13 at 4:27
2
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C# - What does the Assert() method do? Is it still useful?
I am debugging with breakpoints and I realize the assert call? I thought it was only for unit tests. What does it do more than breakpoint? Since I can breakpoint, why should I use Assert?
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Representing Monetary Values in Java [closed]
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+1 looks interesting, glad to see it's BigDecimal under the hood!
– ninesided
Nov 1 '11 at 14:22
add a commen...
Should I inherit from std::exception?
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So what's your point? Definition implies declaration, what do you see being wrong here?
– Nikolai Fetissov
May 14 '16 at 17:48
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ArrayList initialization equivalent to array initialization [duplicate]
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Arrays.asList can help here:
new ArrayList<Integer>(Arrays.asList(1,2,3,5,8,13,21));
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