大约有 8,200 项符合查询结果(耗时:0.0275秒) [XML]
How to download an entire directory and subdirectories using wget?
I am trying to download the files for a project using wget , as the SVN server for that project isn't running anymore and I am only able to access the files through a browser. The base URLs for all the files is the same like
...
Simple proof that GUID is not unique [closed]
I'd like to prove that a GUID is not unique in a simple test program.
I expected the following code to run for hours, but it's not working. How can I make it work?
...
How to import existing Git repository into another?
I have a Git repository in a folder called XXX , and I have second Git repository called YYY .
15 Answers
...
How do I temporarily disable triggers in PostgreSQL?
... loading data and can re-calculate all trigger modifications much more cheaply after the fact than on a row-by-row basis.
6...
Python multiprocessing PicklingError: Can't pickle
I am sorry that I can't reproduce the error with a simpler example, and my code is too complicated to post. If I run the program in IPython shell instead of the regular Python, things work out well.
...
How should one use std::optional?
I'm reading the documentation of std::experimental::optional and I have a good idea about what it does, but I don't understand when I should use it or how I should use it. The site doesn't contain any examples as of yet which leaves it harder for me to grasp the true concept of this object. When...
How to store arrays in MySQL?
I have two tables in MySQL. Table Person has the following columns:
7 Answers
7
...
How to stop mysqld
...
Try:
/usr/local/mysql/bin/mysqladmin -u root -p shutdown
Or:
sudo mysqld stop
Or:
sudo /usr/local/mysql/bin/mysqld stop
Or:
sudo mysql.server stop
If you install the Launchctl in OSX you can try:
MacPorts
sudo launchctl unload -w /Library/LaunchDaemons/org....
Surrogate vs. natural/business keys [closed]
...
Both. Have your cake and eat it.
Remember there is nothing special about a primary key, except that it is labelled as such. It is nothing more than a NOT NULL UNIQUE constraint, and a table can have more than one.
If you use a surrogate key, you still want a business key to ensure u...
How can I generate Unix timestamps?
Related question is "Datetime To Unix timestamp", but this question is more general.
18 Answers
...