大约有 45,000 项符合查询结果（耗时：0.0573秒） [XML]
What is a callback?
What's a callback and how is it implemented in C#?
11 Answers
11
...
boost::flat_map and its performance compared to map and unordered_map
It is common knowledge in programming that memory locality improves performance a lot due to cache hits. I recently found out about boost::flat_map which is a vector based implementation of a map. It doesn't seem to be nearly as popular as your typical map / unordered_map so I haven't been able ...
Choosing between MEF and MAF (System.AddIn)
The Managed Extensibility Framework (MEF) and Managed AddIn Framework (MAF, aka System.AddIn) seem to accomplish very similar tasks. According to this Stack Overflow question, Is MEF a replacement for System.Addin? , you can even use both at the same time.
...
How to delete large data of table in SQL without log?
...cate table will simply empty the table, you cannot use WHERE clause to limit the rows being deleted and no triggers will be fired.
On the other hand if you are deleting more than 80-90 Percent of the data, say if you have total of 11 Million rows and you want to delete 10 million another way would...
App can't be opened because it is from an unidentified developer
...
It's because of the Security options.
Go to System Preferences... > Security & Privacy and there should be a button saying Open Anyway, under the General tab.
You can avoid doing this by changing the options under Al...
How do JavaScript closures work?
How would you explain JavaScript closures to someone with a knowledge of the concepts they consist of (for example functions, variables and the like), but does not understand closures themselves?
...
How do I recursively delete a directory and its entire contents (files + sub dirs) in PHP?
How do I delete a directory and its entire contents (files and subdirectories) in PHP?
21 Answers
...
CSS Background Opacity [duplicate]
...
Children inherit opacity. It'd be weird and inconvenient if they didn't.
You can use a translucent PNG file for your background image, or use an RGBa (a for alpha) color for your background color.
Example, 50% faded black background:
...
What is the benefit of zerofill in MySQL?
I just want to know what is the benefit/usage of defining ZEROFILL for INT DataType in MySQL ?
9 Answers
...
Cannot delete directory with Directory.Delete(path, true)
...
Editor's note: Although this answer contains some useful information, it is factually incorrect about the workings of Directory.Delete. Please read the comments for this answer, and other answers to this question.
I ran into...