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Why must a lambda expression be cast when supplied as a plain Delegate parameter
...her be converted to a delegate type or an expression tree - but it has to know which delegate type. Just knowing the signature isn't enough. For instance, suppose I have:
public delegate void Action1();
public delegate void Action2();
...
Delegate x = () => Console.WriteLine("hi");
What woul...
How to get an enum which is created in attrs.xml in code
... it here ) with an declare-styleable attribute of type enum. In xml I can now choose one of the enum entries for my custom attribute. Now I want to create an method to set this value programmatically, but I can not access the enum.
...
What is the curiously recurring template pattern (CRTP)?
...ss A : public X<A> {...};
It is curiously recurring, isn't it? :)
Now, what does this give you? This actually gives the X template the ability to be a base class for its specializations.
For example, you could make a generic singleton class (simplified version) like this
template <cl...
How to view AndroidManifest.xml from APK file?
...s-* file
Download apktool-* file
Unpack both to your Windows directory
Now copy the APK file also in that directory and run the following command in your command prompt:
apktool d HelloWorld.apk ./HelloWorld
This will create a directory "HelloWorld" in your current directory. Inside it you ca...
How to use gitignore command in git
...nch on github and it pushed all the library and documents into the github. Now what can I do and how can I use gitignore command to avoid the same mistake again.
...
How can I format a decimal to always show 2 decimal places?
...ring formatting
Python 3.6 introduced literal string interpolation (also known as f-strings) so now you can write the above even more succinct as:
>>> f'{pi:.2f}'
'3.14'
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Calling C++ class methods via a function pointer
...mal* pAnimal = (*pNew)();
pAnimal->makeNoise();
return 0;
}
Now although you can normally use a Dog* in the place of an Animal* thanks to the magic of polymorphism, the type of a function pointer does not follow the lookup rules of class hierarchy. So an Animal method pointer is not ...
How to center a subview of UIView
...ectangle origin and center does fit the same coordinates as it's parent
Now let's try to add subView another SubSubView, and giving subSubview same origin as subView, but make subSubView a child view of subView
We'll add this code:
var subSubView = UIView();
subSubView.frame.origin = subView.fr...
MongoDB Aggregation: How to get total records count?
...
How do you apply limit to the results set? Results is now a nested array
– valen
Jan 7 '18 at 18:53
1
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How does Tortoise's non recursive commit work?
...
On 26.08.2011 22:39, Ryan J Ollos wrote:
For several months now I've been seeing the following dialog box appear when
initiating Commit. It frequently happens when attempting to commit following
a merge.
The thing I have noticed lately however is that if I Cancel and ...