大约有 31,100 项符合查询结果（耗时：0.0588秒） [XML]
Why can't a text column have a default value in MySQL?
...you try to create a TEXT column on a table, and give it a default value in MySQL, you get an error (on Windows at least). I cannot see any reason why a text column should not have a default value. No explanation is given by the MySQL documentation. It seems illogical to me (and somewhat frustrating,...
Selecting multiple columns in a pandas dataframe
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Yes this was implicit in my answer. The bit about the copy was only for use of ix[] if you prefer to use ix[] for any reason.
– ely
Jul 8 '12 at 18:09
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Copy paste text into iOS simulator
... Looks like this approach works often but not all the time. In my case 100% working method is to Cmd+C some text, then copy it by mouse context menu, then in Simulator Cmd+V, Cmd+Shift+V, paste via menu. Strange but works...
– brigadir
Nov 27 '15 at...
Non-Relational Database Design [closed]
...e only just started with non-relational DBs, and I am still trying to wrap my head around it and figure out what the best model would be. And I can only speak for CouchDB.
Still, I have some preliminary conclusions:
Have you come up with alternate designs that work much better in the non-relationa...
What exceptions should be thrown for invalid or unexpected parameters in .NET?
...t! I agree that you answered his specific question exactly right, but see my answer below to help round out defensive coding and validating parameters ;-D
– STW
Apr 21 '09 at 19:57
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Run PHP Task Asynchronously
... the tips. The specific one about ignore_user_abort doesn't really help in my case, my whole goal is to avoid unnecessary delays for the user.
– davr
May 14 '09 at 19:20
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How to use classes from .jar files?
...Java tutorials on Sun for JAR files, but I still can't find a solution for my problem. I need to use a class from a jar file called jtwitter.jar, I downloaded the file, and tried executing it (I found out yesterday that .jar files can be executed by double clicking on them) and Vista gave me an erro...
How do I turn off the unlimited whitespace in IntelliJ editor?
...earlier, dang that is annoying I wonder if I can turn it off. Sure enough my answer was solved. Thanks for the tip.
– Kyle LeNeau
Apr 28 '11 at 3:34
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How do I get the current absolute URL in Ruby on Rails?
How can I get the current absolute URL in my Ruby on Rails view?
33 Answers
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How to empty (“truncate”) a file on linux that already exists and is protected in someway?
I have a file called error.log on my server that I need to frequently truncate. I have rw permissions for the file. Opening the file in vi > deleting all content > saving works (obviously). But when I try the below
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