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Timer function to provide time in nano seconds using C++
...ec ts;
clock_gettime(CLOCK_REALTIME, &ts);
return (uint64_t)ts.tv_sec * 1000000LL + (uint64_t)ts.tv_nsec / 1000LL;
}
the timing and values produced:
Absolute values:
rdtsc = 4571567254267600
clock_gettime = 1278605535506855
Processing time: (10000000 runs)
rdtsc ...
SVN needs-lock 设置强制只读属性（官方资料） - 更多技术 - 清泛网 - 专注...
SVN needs-lock 设置强制只读属性（官方资料）Automatic lock-modify-unlockFrom SubversionWikiJump to: navigation, searchDifferent versions of binary files cannot be...Automatic lock-modify-unlock
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Different versions of binary files c...
Android Left to Right slide animation
...ew.OnClickListener;
import android.widget.Button;
import android.widget.TextView;
public class FirstActivity extends RootActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
s...
How to Create a circular progressbar in Android which rotates on it?
...lass CustomProgressBarActivity extends AppCompatActivity {
private TextView txtProgress;
private ProgressBar progressBar;
private int pStatus = 0;
private Handler handler = new Handler();
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(...
How to programmatically set maxLength in Android TextView?
I would like to programmatically set maxLength property of TextView as I don't want to hard code it in the layout. I can't see any set method related to maxLength .
...
App Inventor 2 参考文档 · App Inventor 2 中文网
...对端
技术和其他指南
官方英文文档翻译，更专业、更深入的研究参考
中文网原创
原创技术文档、作品、文章、问答与解决思路
VIP 专享...
Implement touch using Python?
...port *
libc = CDLL("libc.so.6")
# struct timespec {
# time_t tv_sec; /* seconds */
# long tv_nsec; /* nanoseconds */
# };
# int futimens(int fd, const struct timespec times[2]);
class c_timespec(Structure):
_fields_ = [('tv_sec', c_long), ('tv_ns...
Get Value of a Edit Text field
...savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
mButton = (Button)findViewById(R.id.button);
mEdit = (EditText)findViewById(R.id.edittext);
mButton.setOnClickListener(
new View.OnClickListener()
{
public voi...
Redis 的性能幻想与残酷现实 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...是抱有幻想的。
幻想
要了解 Redis 的性能，我们先看看官方的基准性能测试数据，心里有个底。
测试前提
Redis version 2.4.2
Using the TCP loopback
Payload size = 256 bytes
测试结果
SET: 198412.69/s
GET: 198019.80/s
这个数据刚一看觉得有...
How can I change the color of AlertDialog title and the color of the line under it
...itle color...
UPDATE: Title color
Hack for changing title color:
int textViewId = d.getContext().getResources().getIdentifier("android:id/alertTitle", null, null);
TextView tv = (TextView) d.findViewById(textViewId);
tv.setTextColor(getResources().getColor(R.color.my_color));
...