大约有 45,000 项符合查询结果（耗时：0.0560秒） [XML]
Entity Framework and SQL Server View
...
We had the same problem and this is the solution:
To force entity framework to use a column as a primary key, use ISNULL.
To force entity framework not to use a column as a primary key, use NULLIF.
An easy way to apply this is to wrap the select ...
Is there an Eclipse plugin to run system shell in the Console? [closed]
...awesome. Dolphin, KDE's file navigator, has this feature, you can press F4 and a console shows located on the directory you are standing.
...
How to split a column into two columns?
I have a data frame with one column and I'd like to split it into two columns, with one column header as ' fips' and the other 'row'
...
How can I get a file's size in C++? [duplicate]
...?
Before answering, make sure it is portable (may be executed on Unix, Mac and Windows),
reliable, easy to understand and without library dependencies (no boost or qt, but for instance glib is ok since it is portable library).
...
Decode HTML entities in Python string?
...e('£682m'))
FYI html.parser.HTMLParser.unescape is deprecated, and was supposed to be removed in 3.5, although it was left in by mistake. It will be removed from the language soon.
Python 2.6-3.3
You can use HTMLParser.unescape() from the standard library:
For Python 2.6-2.7 it's i...
Optimizing away a “while(1);” in C++0x
...oops?, although this is WG14 document the rationale applies to C++ as well and the document refers to both WG14 and WG21:
As N1509 correctly points out, the current draft essentially gives
undefined behavior to infinite loops in 6.8.5p6. A major issue for
doing so is that it allows code to m...
How can I get `find` to ignore .svn directories?
I often use the find command to search through source code, delete files, whatever. Annoyingly, because Subversion stores duplicates of each file in its .svn/text-base/ directories my simple searches end up getting lots of duplicate results. For example, I want to recursively search for uint i...
Remove characters from C# string
...must at some point iterate through the string to perform their operations, and they can be much slower with the overheads from the regex itself. They really excel when it comes to extremely complex manipulation, where dozens of lines of code and multiple loops would be needed. Testing the compiled...
Exception thrown in catch and finally clause
...
Based on reading your answer and seeing how you likely came up with it, I believe you think an "exception-in-progress" has "precedence". Keep in mind:
When an new exception is thrown in a catch block or finally block that will propagate out of that blo...
Extract a number from a string (JavaScript)
I have a string in JavaScript like #box2 and I just want the 2 from it.
21 Answers
...