大约有 47,000 项符合查询结果（耗时：0.0565秒） [XML]
SQL query return data from multiple tables
...l auto_increment primary key,
-> color varchar(15), paint varchar(10));
Query OK, 0 rows affected (0.01 sec)
mysql> show columns from colors;
+-------+-------------+------+-----+---------+----------------+
| Field | Type | Null | Key | Default | Extra |
+-------+---------...
Principal component analysis in Python
...
|
edited Sep 3 '10 at 11:40
nikow
19.6k66 gold badges4242 silver badges6969 bronze badges
answe...
How to normalize a NumPy array to within a certain range?
...
140
audio /= np.max(np.abs(audio),axis=0)
image *= (255.0/image.max())
Using /= and *= allows you ...
How to compare two colors for similarity/difference
...
answered Jan 26 '12 at 14:20
Liudvikas BukysLiudvikas Bukys
5,27033 gold badges2323 silver badges3636 bronze badges
...
What belongs in an educational tool to demonstrate the unwarranted assumptions people make in C/C++?
... Functions can be called in either order
**/
return 0;
}
share
|
improve this answer
|
follow
|
...
What does `someObject.new` do in Java?
...
120
It's the way to instantiate a non-static inner class from outside the containing class body, as ...
How to get the seconds since epoch from the time + date output of gmtime()?
...calendar.timegm().
>>> calendar.timegm(time.gmtime())
1293581619.0
You can turn your string into a time tuple with time.strptime(), which returns a time tuple that you can pass to calendar.timegm():
>>> import calendar
>>> import time
>>> calendar.timegm(time....
Android OpenGL ES and 2D
...ave your canvas set up, you start by calling something like:
gl.glClear(GL10.GL_COLOR_BUFFER_BIT);
After that you're ready to render a sprite.
First, you'll need to load the sprite into a texture: http://qdevarena.blogspot.com/2009/02/how-to-load-texture-in-android-opengl.html
However, this is the...
Using comparison operators in Scala's pattern matching system
....e. an if and a boolean expression after the pattern:
a match {
case 10 => println("ten")
case x if x > 10 => println("greater than ten")
case _ => println("less than ten")
}
Edit: Note that this is more than superficially different to putting an if after the =>, becaus...