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How to show the loading indicator in the top status bar
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It's in UIApplication:
For Objective C:
Start:
[UIApplication sharedApplication].networkActivityIndicatorVisible = YES;
End:
[UIApplication sharedApplication].networkActivityIndicatorVisible = NO;
For swift :
Start
UIApplication.shared.isNetworkActivityIndi...
How to reset a single table in rails?
I want the primary key values to start from 1 again.
8 Answers
8
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What is the maximum possible length of a .NET string?
... doubling when it's limit is hit. So, you will see the growth pain once at start, once at 5,000 bytes, again at 10,000, again at 20,000. Appending strings will incur the pain every loop iteration.
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What is a “first chance exception”?
...me, but vb.net does. Basically, when an exception is thrown, the run-time starts by searching up the call stack to find out who if anyone is going to catch it. That process takes place before any finally blocks run. Once the system decided who's going to catch an exception (and determined that so...
Variable number of arguments in C++?
...t the va_list type as well as three functions that operate on it called va_start(), va_arg() and va_end().
#include<stdarg.h>
int maxof(int n_args, ...)
{
va_list ap;
va_start(ap, n_args);
int max = va_arg(ap, int);
for(int i = 2; i <= n_args; i++) {
int a = va_arg...
Comet and jQuery [closed]
...f the different implementation. It's pretty interesting and should get you started.
Hope that helps!
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How to clear a notification in Android
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Starting with API level 18 (Jellybean MR2) you can cancel Notifications other than your own via NotificationListenerService.
@TargetApi(Build.VERSION_CODES.JELLY_BEAN_MR2)
public class MyNotificationListenerService extends ...
What does “xmlns” in XML mean?
...e is no ambiguity as to what each name element means. All of the tags that start with personxml: are tags belonging to your XML, all the ones that start with cityxml: are mine.
There are a few points to note:
If you exclude any namespace declarations, things are considered to be in the default na...
Phonegap Cordova installation Windows
...ed anywhere, or at least it is not very clear at all. As one can imagine, starting on one page with running a cordova command and then being taken to another page that says use phonegap, or is it the other way?, is very confusing. Oliver, your link is great, the page is very clear. But I almost o...
Heroku Postgres - terminate hung query (idle in transaction)
... to heroku
(The simple-stupid answer to this question may be ... just restart postgresql. Assuming that's not desirable or not an option ...)
Find the PID by running this sql:
SELECT pid , query, * from pg_stat_activity
WHERE state != 'idle' ORDER BY xact_start;
(The query may need mending...