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Passing a method as a parameter in Ruby
...
100
You want a proc object:
gaussian = Proc.new do |dist, *args|
sigma = args.first || 10.0
.....
Chrome Extension - Get DOM content
.../ the web-page's DOM content as argument
sendResponse(document.all[0].outerHTML);
}
});
manifest.json:
{
"manifest_version": 2,
"name": "Test Extension",
"version": "0.0",
...
"background": {
"persistent": false,
"scripts": ["background.js"]
},
"content_scripts"...
Android - Pulling SQlite database android device
...FileOutputStream(backupDB).getChannel();
dst.transferFrom(src, 0, src.size());
src.close();
dst.close();
}
}
} catch (Exception e) {
}
Don't forget to set the permission to write on SD in your manifest, like below.
<uses-permission android:name=...
python max function using 'key' and lambda expression
...to compare those items by their integer value.
>>> lis = ['1', '100', '111', '2']
Here max compares the items using their original values (strings are compared lexicographically so you'd get '2' as output) :
>>> max(lis)
'2'
To compare the items by their integer value use key...
Why should I declare a virtual destructor for an abstract class in C++?
...mory leak.
For example
class Interface
{
virtual void doSomething() = 0;
};
class Derived : public Interface
{
Derived();
~Derived()
{
// Do some important cleanup...
}
};
void myFunc(void)
{
Interface* p = new Derived();
// The behaviour of the next line is undefined...
Difference between __str__ and __repr__?
...
+100
Alex summarized well but, surprisingly, was too succinct.
First, let me reiterate the main points in Alex’s post:
The default im...
If my interface must return Task what is the best way to have a no-operation implementation?
...ask.CompletedTask to accomplish this.
Pre .net 4.6:
Using Task.FromResult(0) or Task.FromResult<object>(null) will incur less overhead than creating a Task with a no-op expression. When creating a Task with a result pre-determined, there is no scheduling overhead involved.
...
Using a Single Row configuration table in SQL Server database. Bad idea?
...
190
I have done this two ways in the past - a single row table and a key/value pair table - and ther...
Convert string with comma to integer
...
Michael KohlMichael Kohl
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...
UICollectionView auto scroll to cell at IndexPath
...rray of collection view. All of the cells don't fit on the screen. I have 30 cells and only 6 on the screen.
9 Answers
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