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What's the best way to inverse sort in scala?
..._.size).reverse)
Maybe not the shortest to write (compared to minus) but intent is clear
Update
The last line does not work. To accept the _ in Ordering.by(_.size), the compiler needs to know on which type we are ordering, so that it may type the _. It may seems that would be the type of the ele...
What is the difference between _tmain() and main() in C++?
... extension.
main is, according to the C++ standard, the program's entry point.
It has one of these two signatures:
int main();
int main(int argc, char* argv[]);
Microsoft has added a wmain which replaces the second signature with this:
int wmain(int argc, wchar_t* argv[]);
And then, to make i...
MFC 中CImageList的用法 - C/C++ - 清泛网 - 专注C/C++及内核技术
...列表并绑定对象，图像控件的建立方法如下
BOOL Create（int cx，int cy，UINT nFlags，int nInitial，int nGrow）;
BOOL Create（UINT nBitmapID，int cx，int nGrow，COLORREF crMask）;
BOOL Create（LPCTSTR lpszBitmapID，int cx，int nGrow，COLORREF crMask）;
BOOL Create...
How do I represent a time only value in .NET?
...her answers and the edit to the question, I would still use TimeSpan. No point in creating a new structure where an existing one from the framework suffice.
On these lines you would end up duplicating many native data types.
...
ActiveRecord OR query
...zation and make your queries DB agnostic. The only overhead is where Rails converts the syntax to SQL query. And it is just a matter of milliseconds. Ofcourse you should write the best performant SQL query and try to convert it to ActiveRecord syntax. If the SQL cannot be represented in ActiveRecord...
Scala: What is a TypeTag and how do I use it?
...about TypeTags is that they somehow replaced Manifests. Information on the Internet is scarce and doesn't provide me with a good sense of the subject.
...
Why does Math.floor return a double?
...s that Math.floor() returns a double that is "equal to a mathematical integer", but then why shouldn't it return an int ?
...
What are enums and why are they useful?
... or flags ("execute now", "defer execution").
If you use enums instead of integers (or String codes), you increase compile-time checking and avoid errors from passing in invalid constants, and you document which values are legal to use.
BTW, overuse of enums might mean that your methods do too muc...
Error “initializer element is not constant” when trying to initialize variable with const
...ion, regardless of their type.
For example, this is NOT a constant
const int N = 5; /* `N` is not a constant in C */
The above N would be a constant in C++, but it is not a constant in C. So, if you try doing
static int j = N; /* ERROR */
you will get the same error: an attempt to initialize...
Defining static const integer members in class definition
...llows static const members to be defined inside a class so long as it's an integer type.
7 Answers
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