大约有 40,000 项符合查询结果（耗时：0.0423秒） [XML]
Copy table without copying data
...her processes. Basically caused a massive lock meltdown and had to restart MySQL.
– Mark B
Jul 29 '14 at 15:57
6
...
Can't stop rails server
...
If Webrick is running, then its PID is in {APP_ROOT}/tmp/pids/server.pid file so you don't have to look for it -- as long as server is running. So, if instead of doing ctrl-c you just run that kill command in another terminal, it will kill Webrick server immediately.
...
What is the difference between loose coupling and tight coupling in the object oriented paradigm?
... output in a CSV file rather than JSON etc., or if you want to switch from MySQL to PostGreSQL you should be able to make those changes extremely easily in your code, without having to rewrite the entire class etc. In other words, you do not want to tightly couple your application with a specific da...
How should I choose an authentication library for CodeIgniter? [closed]
...
All these libraries use mysql.. however I use MongoDb which is a noSql database. Is there a library which works with MoongoDB? I tried converting one of the libraries above to insert into MongoDB instead of MySql but it is getting too complex and wo...
Delete sql rows where IDs do not have a match from another table
I'm trying to delete orphan entries in a mysql table.
3 Answers
3
...
Where is Java Installed on Mac OS X?
... about inaccessible directories, get rid of the messages rather than using root privs unnecessarily. Using sudo all the time is a bad habit. Redirect stderr to /dev/null, like this: find / -name java 2> /dev/null
– Walter Underwood
Sep 26 '13 at 15:29
...
How to deal with SettingWithCopyWarning in Pandas?
...sers attempt to solve a problem "Y" that is actually a symptom of a deeper rooted problem "X". Questions will be raised based on common problems that encounter this warning, and solutions will then be presented.
Question 1
I have a DataFrame
df
A B C D E
0 5 0 3 3 7
1 ...
What is setup.py?
...
If you downloaded package that has "setup.py" in root folder, you can install it by running
python setup.py install
If you are developing a project and are wondering what this file is useful for, check Python documentation on writing the Setup Script
...
How to prevent multiple instances of an Activity when it is launched with different Intents
...tivities.
// we never want this to happen. Instead, we check if we are the root and if not, we finish.
if (!isTaskRoot()) {
final Intent intent = getIntent();
if (intent.hasCategory(Intent.CATEGORY_LAUNCHER) && Intent.ACTION_MAIN.equals(intent.getAction())) {
Log.w(LOG_TAG, "...
Create a git patch from the uncommitted changes in the current working directory
...end using that tool):
Commit your working changes
Right click the branch root directory and click Tortoise Git -> Create Patch Serial
Choose whichever range makes sense (Since: FETCH_HEAD will work if you're well-synced)
Create the patch(es)
Right click the branch root directory and click Tor...