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Ruby / Rails - Change the timezone of a Time, without changing the value
I have a record foo in the database which has :start_time and :timezone attributes.
11 Answers
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Current location permission dialog disappears too quickly
...
Same symptom, different cause: do not to call startUpdatingLocation more than once in a row.
I had accidentally structured things such that the code was unintentionally calling startUpdatingLocation twice in a row, which is apparently bad. It might also have had somethi...
C# 通过代码安装、卸载、启动、停止服务 - .NET(C#) - 清泛IT论坛，有思想、有深度
... // --Start Service
// service.Start();
}
...
How to use Git?
...hat link is broken: Here is a link to another Git for Designers )
I would start at http://git-scm.com/documentation, there are documents and great video presentations for non-software-developer/cs users. Git for beginners have some basic stuff.
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How to use QueryPerformanceCounter?
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#include <windows.h>
double PCFreq = 0.0;
__int64 CounterStart = 0;
void StartCounter()
{
LARGE_INTEGER li;
if(!QueryPerformanceFrequency(&li))
cout << "QueryPerformanceFrequency failed!\n";
PCFreq = double(li.QuadPart)/1000.0;
QueryPerformanceCount...
What's the difference between deadlock and livelock?
... // <- wait for a second
flag[0] = true; // <- and restart useless work again.
}
/*critical section*/; // <- do what we need (this will never happen)
flag[0] = false;
/* PROCESS 1 */
flag[1] = true;
while (flag[0]) {
flag[1] = false;
/*delay */;
flag[1] = tr...
Draw in Canvas by finger, Android
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Start By going through the Fingerpaint demo in the sdk sample.
Another Sample:
public class MainActivity extends Activity {
DrawingView dv ;
private Paint mPaint;
@Override
protected void onCreate(Bun...
Capitalize the first letter of both words in a two word string
...nction tries to achieve title case (which is something else than all words start with capital letter) by letting start all words with capital letters except a collection of English most likely exceptions (like e.g. c("all", "above", "after", "along", "also", "among", "any", "both", "can", "...
Show history of a file? [duplicate]
...duced if somebody has tweaked it over time, but that could give you a good start.
Finally, gitk as a GUI does show me the patch immediately for any commit I click on.
Example :
share
|
improve th...
When should I use Inline vs. External Javascript?
...ng to send this portion down the wire, you can expect that the client will start receiving this somewhere around 5ms + latency after connecting to your server. Assuming the server is reasonably close this latency could be between 20ms to 60ms. Browsers will start processing this section as soon as t...