我正在提取查看月份的Fullcalendar数据。当我单击“下一个/上一个月”视图按钮时,它不会熄灭并获取新月份的新数据。
如何获得“下一个/上一个”按钮来再次调用数据库并提取该月的记录?
我有一个列应该包含2个幂n:2,4,8,16,32等值之一.我想在表模式级别强制执行 - 有没有办法指定这样的列约束?
谢谢!
How do I select the next "n" elements starting from the current element? What I mean is...
$(this).attr(...);
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I want to do this "n" times. For the example of n=4:
$(this).attr(...);
$(this).next().attr(...);
$(this).next().next().attr(...);
$(this).next().next().next().attr(...);
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or perhaps do it in a loop:
for (i = 0; i < n; i++) {
$(this).next().attr(...);
}
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How can I do this? Is there a way I can do this by selecting the next "n" elements or in a loop?
I need to the the bin path of the executing assembly. How do you get it? I have a folder Plugins in the Bin/Debug and I need to get the location
I like to have a custom selected image when a user selects an item on the tab bar, by default it selects as blue like but would like to have a green color instead. something like below any thoughts?
alt text http://www.freeimagehosting.net/uploads/11a2137011.png
如何从法线向量和点绘制matlab或matplotlib中的平面?
我一直在学习Ruby,所以我想我会尝试一些项目的Euler难题.令人尴尬的是,我只是解决了问题4 ......
问题4如下:
回文数字两种方式相同.由两个2位数字的乘积制成的最大回文是9009 = 91×99.
找到由两个3位数字的乘积制成的最大回文.
所以我想我会在一个嵌套的for循环中从999循环到100并对回文进行测试,然后当我找到第一个(应该是最大的一个)时突破循环:
final=nil
range = 100...1000
for a in range.to_a.reverse do
for b in range.to_a.reverse do
c=a*b
final=c if c.to_s == c.to_s.reverse
break if !final.nil?
end
break if !final.nil?
end
puts final
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这确实输出了回文580085,但显然这不是该范围内两个三位数字的最高乘积.奇怪的是,如果我将范围更改为10 ... 100,则相同的代码成功返回9009,就像在示例中一样.
谢谢
下面的代码预计打印"kevin"但是,它的打印垃圾值.我已经检查了调试器."operator char*"调用返回的指针无效.任何的想法?
class Wrapper
{
private:
char* _data;
public:
Wrapper(const char* input)
{
int length = strlen(input) + 1;
_data = new char[length];
strcpy_s(_data, length, input);
}
~Wrapper()
{
delete[] _data;
}
operator char*()
{
return _data;
}
};
int main()
{
char* username = Wrapper("kevin");
printf(username);
return 0;
}
Run Code Online (Sandbox Code Playgroud) 免责声明:我对多线程非常糟糕,所以我完全有可能做错了.
我在Python中编写了一个非常基本的光线跟踪器,我一直在寻找可能加速它的方法.多线程似乎是一种选择,所以我决定尝试一下.但是,虽然原始脚本需要大约85秒来处理我的示例场景,但多线程脚本最终需要大约125秒,这看起来非常不直观.
这是原始的样子(我不会复制绘图逻辑和东西.如果有人认为需要找出问题,我会继续把它放回去):
def getPixelColor(x, y, scene):
<some raytracing code>
def draw(outputFile, scene):
<some file handling code>
for y in range(scene.getHeight()):
for x in range(scene.getWidth()):
pixelColor = getPixelColor(x, y, scene)
<write pixelColor to image file>
if __name__ == "__main__":
scene = readScene()
draw(scene)
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这是多线程版本:
import threading
import Queue
q = Queue.Queue()
pixelDict = dict()
class DrawThread(threading.Thread):
def __init__(self, scene):
self.scene = scene
threading.Thread.__init__(self)
def run(self):
while True:
try:
n, x, y = q.get_nowait()
except Queue.Empty:
break
pixelDict[n] = getPixelColor(x, y, …Run Code Online (Sandbox Code Playgroud) jquery ×2
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