小编Mic*_*hal的帖子

我有这样简单的表格:

+----------+---------------+-------------+
| ID (int) | KEY (varchar) | VALUE (int) |
+----------+---------------+-------------+
|        1 | asdf          |         100 |
|        2 | fdsa          |         321 |
|        3 | ecda          |         211 |
+----------+---------------+-------------+

我想更新行,KEY = 'something'但如果没有KEY = 'something'我想要INSERT新行的行:

+----------+---------------+-------------+
| ID (int) | KEY (varchar) | VALUE (int) |
+----------+---------------+-------------+
|        1 | asdf          |         100 |
|        2 | fdsa          |         321 |
|        3 | ecda          |         211 |
| …

当我使用urllib2模块不在函数中一切正常(这里是代码):

headers = {'User-Agent' : 'Mozilla/5.0 (Windows NT 6.1) AppleWebKit/535.7 (KHTML, like Gecko) Chrome/16.0.912.77 Safari/535.7'}
request = urllib2.Request(url, '', headers)
response = urllib2.urlopen(request)
returned_array = [response.geturl(), response.read()]
print returned_array

但当我把它用于功能:

def nk_get_site(url):
  headers = {'User-Agent' : 'Mozilla/5.0 (Windows NT 6.1) AppleWebKit/535.7 (KHTML, like Gecko) Chrome/16.0.912.77 Safari/535.7'}
  request = urllib2.Request(url, '', headers)
  response = urllib2.urlopen(request)
  returned_array = [response.geturl(), response.read()]
  return returned_array

它不工作,错误:

Traceback (most recent call last):
File "C:\py\NetKit\netkit.py", line 37, in <module>
print nk_get_site('http://www.google.com/')
File "C:\py\NetKit\netkit.py", line 33, in nk_get_site …

我有这个非常简单的汇编代码:

start:
add ax, 100    
; if ax overflow add to bx 1
jmp start

但我不知道如何检测ax寄存器溢出,任何人都可以帮助我吗？

我正在使用Sublime Text 2,当我双击与下划线连接的单词时:

this_is_it

它会自动选择整个短语,但是当单词与break符号连接时,如下所示:

this-is-it

它只会选择一个单词,如何设置Sublime Text来选择整个短语？

如何绘制带圆角的线/弧，如下图所示？我需要在Canvas.

我试图在我的类构造函数中初始化指向struct数组的指针,但它根本不起作用...

class Particles {

private:

    struct Particle {
        double x, y, z, vx, vy, vz;
    };

    Particle * parts[];

public:

    Particles (int count)
    {
        parts = new Particle [count]; // < here is problem
    }

};

我正在尝试检测设备当前是否正在充电,但此代码始终将isCharging变量设置为false:

public class PowerReceiver extends BroadcastReceiver {

    @Override
    public void onReceive(Context context, Intent intent)
    {
        int status = intent.getIntExtra(BatteryManager.EXTRA_STATUS, -1);
        boolean isCharging = status == BatteryManager.BATTERY_STATUS_CHARGING || status == BatteryManager.BATTERY_STATUS_FULL;

        int chargePlug = intent.getIntExtra(BatteryManager.EXTRA_PLUGGED, -1);
        boolean usbCharge = chargePlug == BatteryManager.BATTERY_PLUGGED_USB;
        boolean acCharge = chargePlug == BatteryManager.BATTERY_PLUGGED_AC;

        if (isCharging)
        {
            Toast.makeText(context, "Charging", Toast.LENGTH_LONG).show();
        } else {
            Toast.makeText(context, "Not charging", Toast.LENGTH_LONG).show();
        }

    }

}

我有这样的列表:

[['one', 'two', 'three', ...], ['a', 'b', ...], ['left', 'right'] ...]

我需要创建所有可能的项目组合并将其放入字符串中:

"one|a|left"
"one|a|right"
"one|b|left"
"one|b|right"
"two|a|left"
"two|a|right"
"two|b|left"
...

最简单的方法是什么？