大约有 47,000 项符合查询结果(耗时:0.0494秒) [XML]
Renaming a virtualenv folder without breaking it
I've created folder and initialized a virtualenv instance in it.
10 Answers
10
...
nvarchar(max) vs NText
What are the advantages and disadvantages of using the nvarchar(max) vs. NText data types in SQL Server? I don't need backward compatibility, so it is fine that nvarchar(max) isn't supported in older SQL Server releases.
...
Install Windows Service created in Visual Studio
...ervice in Visual Studio 2010, I get the message stating to use InstallUtil and net start to run the service.
7 Answers
...
Iterate a list as pair (current, next) in Python
...ometimes need to iterate a list in Python looking at the "current" element and the "next" element. I have, till now, done so with code like:
...
Simple argparse example wanted: 1 argument, 3 results
...tiny beginner brain to grasp right now. I don't need to do math on the command line or meddle with formatting lines on the screen or change option characters. All I want to do is "If arg is A, do this, if B do that, if none of the above show help and quit" .
...
Why should you use an ORM? [closed]
If you are motivate to the "pros" of an ORM and why would you use an ORM to management/client, what are those reasons would be?
...
Should I use the datetime or timestamp data type in MySQL?
Would you recommend using a datetime or a timestamp field, and why (using MySQL)?
39 Answers
...
Multiline strings in JSON
I'm writing some data files in JSON format and would like to have some really long string values split over multiple lines. Using python's JSON module I get a whole lot of errors, whether I use \ or \n as an escape.
...
Are the days of passing const std::string & as a parameter over?
...t talk by Herb Sutter who suggested that the reasons to pass std::vector and std::string by const & are largely gone. He suggested that writing a function such as the following is now preferable:
...
SQL “select where not in subquery” returns no results
...emantically the same.
When it is nullable, NOT IN is different, since IN (and, therefore, NOT IN) return NULL when a value does not match anything in a list containing a NULL.
This may be confusing but may become more obvious if we recall the alternate syntax for this:
common_id = ANY
(
SELECT c...
