大约有 40,000 项符合查询结果（耗时：0.0353秒） [XML]
Solving a “communications link failure” with JDBC and MySQL [duplicate]
...change the MySQL settings, you can refer to the following files:
Linux: /etc/mysql/my.cnf or /etc/my.cnf (depending on the Linux distribution and MySQL package used)
Windows: C:**ProgramData**\MySQL\MySQL Server 5.6\my.ini (Notice it's ProgramData, not Program Files)
Here are the solutions:
ch...
How to retrieve the first word of the output of a command in bash?
... -- $string
$ echo $1
word1
$ echo $2
word2
now you can assign $1, or $2 etc to another variable if you like.
share
|
improve this answer
|
follow
|
...
How do I import the javax.servlet API in my Eclipse project?
...development tools to create dynamic web projects and easily integrate servletcontainers (those tools are part of Web Tools Platform, WTP). In case you already had Eclipse IDE for Java (without Enterprise), and manually installed some related plugins, then chances are that it wasn't done properly. Yo...
How would I get a cron job to run every 30 minutes?
... "run when the minute of each hour is 30" (would run at: 1:30, 2:30, 3:30, etc)
example #2
*/30 * * * * your_command
this means "run when the minute of each hour is evenly divisible by 30" (would run at: 1:30, 2:00, 2:30, 3:00, etc)
example #3
0,30 * * * * your_command
this means "run when the...
What exactly are unmanaged resources?
...nections
Unmanaged memory
In XNA: vertex buffers, index buffers, textures, etc.
Normally you want to release those unmanaged resources before you lose all the references you have to the object managing them. You do this by calling Dispose on that object, or (in C#) using the using statement which...
Apache VirtualHost 403 Forbidden
...
I've added this directive to /etc/apache2/apache2.conf and it helped, thank you!
– DmitMedv
Sep 26 '15 at 20:58
...
How to replace text between quotes in vi
...e a word
ci( - change inside parentheses
dit - delete inside an HTML tag, etc.
More about different vim text objects here.
share
|
improve this answer
|
follow
...
Get statistics for each group (such as count, mean, etc) using pandas GroupBy?
I have a data frame df and I use several columns from it to groupby :
7 Answers
7
...
Understanding the meaning of the term and the concept - RAII (Resource Acquisition is Initialization
...e same way in C# by replacing synchronized with lock):
void foo()
{
// etc.
synchronized(someObject)
{
// if something throws here, the lock on someObject will
// be unlocked
}
// etc.
}
... is already using RAII: The mutex acquisition is done in the keyword (synchron...
Why doesn't Java offer operator overloading?
...plexNumber.equals to have it return a random value, modify the operands... etc. etc. etc..
In Java, as in C++, or whatever language, the programmer must respect a minimum of semantics when writing code. This means implementing a add function that adds, and Cloneable implementation method that clone...