大约有 31,840 项符合查询结果（耗时：0.0292秒） [XML]
Pimpl idiom vs Pure virtual class interface
..." instances of the class at all. When it does make sense, a polymorphic "Clone" method is usually more appropriate. Examples: A Socket class, a Database class, a "policy" class, anything that would be a "closure" in a functional language.
Both pImpl and pure abstract base class are techniques to ...
Can code that is valid in both C and C++ produce different behavior when compiled in each language?
...of character ('a') in C/C++ for an explanation of the difference.
Another one from this article:
#include <stdio.h>
int sz = 80;
int main(void)
{
struct sz { char c; };
int val = sizeof(sz); // sizeof(int) in C,
// sizeof(struct sz) in C++
...
Why does ReSharper want to use 'var' for everything?
...mendations on SO). To try it out I opened up a recent ASP.NET MVC project. One of the first and most frequent things I've noticed it suggesting is to change most/all my explicit declarations to var instead. For example:
...
Multiple Indexes vs Multi-Column Indexes
...ctices, Part 1
Indexes in SQL Server 2005/2008 – Part 2 – Internals
One thing to note, clustered indexes should have a unique key (an identity column I would recommend) as the first column.
Basically it helps your data insert at the end of the index and not cause lots of disk IO and Page spl...
“Comparison method violates its general contract!”
Can someone explain me in simple terms, why does this code throw an exception, "Comparison method violates its general contract!", and how do I fix it?
...
Uppercase or lowercase doctype?
...itle>. Only a few HTML validators use SGML. The HTML5 spec is the first one to clarify this: whatwg.org/specs/web-apps/current-work/multipage/…
– Mathias Bynens
Feb 4 '12 at 10:18
...
What’s the difference between ScalaTest and Scala Specs unit test frameworks?
...ppy users, but they differ in several ways. You will probably want to pick one as your main testing tool in Scala, but need not give up the other because you can use pieces of both. If you like ScalaTest's FeatureSpec syntax and specs' Mockito syntax, for example, you can put both jar files in your ...
How to give border to any element using css without adding border-width to the whole width of elemen
...
I've added an answer that allows you to border just one side.
– mikevoermans
May 3 '13 at 16:22
2
...
node.js fs.readdir recursive directory search
...there are two kinds of loops: serial and parallel. A serial loop waits for one iteration to complete before it moves onto the next iteration - this guarantees that every iteration of the loop completes in order. In a parallel loop, all the iterations are started at the same time, and one may complet...
PHP $_SERVER['HTTP_HOST'] vs. $_SERVER['SERVER_NAME'], am I understanding the man pages correctly?
...
That’s probably everyone’s first thought. But it’s a little bit more difficult. See Chris Shiflett’s article SERVER_NAME Versus HTTP_HOST.
It seems that there is no silver bullet. Only when you force Apache to use the canonical name you wi...