大约有 47,000 项符合查询结果（耗时：0.0433秒） [XML]
SQL Server CTE and recursion example
...le on it. This article shows employee info with the help of Sql server CTE and recursion. It is basically showing employees and their manager info. I am not able to understand how this query works. Here is the query:
...
How can I profile C++ code running on Linux?
... a profiler, use one of the suggested ones.
However, if you're in a hurry and you can manually interrupt your program under the debugger while it's being subjectively slow, there's a simple way to find performance problems.
Just halt it several times, and each time look at the call stack. If there...
What belongs in an educational tool to demonstrate the unwarranted assumptions people make in C/C++?
...e to prepare a little educational tool for SO which should help beginners (and intermediate) programmers to recognize and challenge their unwarranted assumptions in C, C++ and their platforms.
...
ASP.NET Identity's default Password Hasher - How does it work and is it secure?
...her that is default implemented in the UserManager that comes with MVC 5 and ASP.NET Identity Framework, is secure enough? And if so, if you could explain to me how it works?
...
What is the difference between . (dot) and $ (dollar sign)?
What is the difference between the dot (.) and the dollar sign ($) ?
13 Answers
13
...
What characters do I need to escape in XML documents?
... to escape all five characters in text. However, the three characters ", ' and > needn't be escaped in text:
<?xml version="1.0"?>
<valid>"'></valid>
Attributes
The safe way is to escape all five characters in attributes. However, the > character needn't be escaped in ...
How do I check if a string is a number (float)?
...
Which, not only is ugly and slow
I'd dispute both.
A regex or other string parsing method would be uglier and slower.
I'm not sure that anything much could be faster than the above. It calls the function and returns. Try/Catch doesn't introd...
SQL Server Text type vs. varchar data type [closed]
I have variable length character data and want to store in SQL Server (2005) database. I want to learn some best practices about how to choose TEXT SQL type or choose VARCHAR SQL type, pros and cons in performance/footprint/function.
...
What is the advantage of using REST instead of non-REST HTTP?
...dy really agrees on what REST is. The wikipedia page is heavy on buzzwords and light on explanation. The discussion page is worth a skim just to see how much people disagree on this. As far as I can tell however, REST means this:
Instead of having randomly named setter and getter URLs and using GET...
Why is there no xrange function in Python3?
Recently I started using Python3 and it's lack of xrange hurts.
6 Answers
6
...