大约有 45,000 项符合查询结果（耗时：0.0500秒） [XML]
Subscripts in plots in R
...
If you are looking to have multiple subscripts in one text then use the star(*) to separate the sections:
plot(1:10, xlab=expression('hi'[5]*'there'[6]^8*'you'[2]))
...
What is a web service endpoint?
... have multiple endpoints, for example in order to make it available using different protocols.
share
|
improve this answer
|
follow
|
...
What is this weird colon-member (“ : ”) syntax in the constructor?
...entry is that,
All other things being equal, your code will run faster if you use initialization lists rather than assignment.
share
|
improve this answer
|
follow
...
Postgresql aggregate array
...ent s
LEFT JOIN Grade g ON g.Student_id = s.Id
GROUP BY s.Id
By the way, if you are using Postgres 9.1, you don't need to repeat the columns on SELECT to GROUP BY, e.g. you don't need to repeat the student name on GROUP BY. You can merely GROUP BY on primary key. If you remove the primary key on s...
How to generate a random int in C?
... bigger reason is that the properties of rand() and functions like it are known best for the use case where they are seeded exactly once per run, and not on every single call. Depending on "randomness" with untested or unproven properties leads to trouble.
– RBerteig
...
When should I use malloc in C and when don't I?
... char array ( a variable) and some_memory points to that allocated memory. Now this array is both read and write. You can now do:
some_memory[0] = 'h';
and the array contents change to "hello World"
share
|
...
How to get image height and width using java?
...* @return dimensions of image
* @throws IOException if the file is not a known image
*/
public static Dimension getImageDimension(File imgFile) throws IOException {
int pos = imgFile.getName().lastIndexOf(".");
if (pos == -1)
throw new IOException("No extension for file: " + imgFile.getAbs...
What in the world are Spring beans?
...eir postProcessAfterInitialization() methods will be called.
Ready to use: Now the bean is ready to use by the application
Destroy: If the bean implements DisposableBean, it will call the destroy() method
share
|
...
Mac OS X - EnvironmentError: mysql_config not found
...nstalling python-dev and libmysqlclient-dev also helped, however I do not know if these packages are available on Mac OS.
Note2: Also, make sure to try running the commands as root.
I got my answers from (besides my brain) these places (maybe you could have a look at them, to see if it would help)...
How do I import the javax.servlet API in my Eclipse project?
...vers? I have Apache Tomcat v7.0 (2) and (3) that I want to delete. Anyone knows how?
– Robben
May 26 '15 at 0:56
Not h...