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Modify table: How to change 'Allow Nulls' attribute from not null to allow null
...TABLE public.contract_termination_requests
ALTER COLUMN management_company_id DROP NOT NULL;
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SQL keys, MUL vs PRI vs UNI
...rences another table's primary key is MUL
mysql> create table penguins(id int primary key);
Query OK, 0 rows affected (0.01 sec)
mysql> create table skipper(id int, foreign key(id) references penguins(id));
Query OK, 0 rows affected (0.01 sec)
mysql> desc skipper;
+-------+---------+----...
nodeValue vs innerHTML and textContent. How to choose?
... text, does not parse HTML, and is faster.
innerText Takes styles into consideration. It won't get hidden text for instance.
innerText didn't exist in firefox until FireFox 45 according to caniuse but is now supported in all major browsers.
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How to change menu item text dynamically in Android
I'm trying to change the title of a menu item from outside of the onOptionsItemSelected(MenuItem item) method.
11 Answers...
Play an audio file using jQuery when a button is clicked
...learnt .currentTimeabove, to learn its length we use .duration.
Example Guide
When document is ready we created an audio element dynamically
We set its source with the audio we want to play.
We used 'ended' event to start file again.
When the currentTime is equal to its duration audio file ...
How do I create delegates in Objective-C?
...se you have a UIWebView. If you'd like to implement its delegate's webViewDidStartLoad: method, you could create a class like this:
@interface MyClass<UIWebViewDelegate>
// ...
@end
@implementation MyClass
- (void)webViewDidStartLoad:(UIWebView *)webView {
// ...
}
@end
Then you coul...
How to get the process ID to kill a nohup process?
...task in the background, the background operator (&) will give you the PID at the command prompt. If your plan is to manually manage the process, you can save that PID and use it later to kill the process if needed, via kill PID or kill -9 PID (if you need to force kill). Alternatively, you can f...
SQLAlchemy: how to filter date field?
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@rippleslash: you are right, and ideally one should use the proper data type for parameters. However all databases understand also the ISO 8601 format for dates, which also happens to be lexicographical order. For this reason for simple examples i generally ...
How to get the index of an element in an IEnumerable?
... +1 for "questioning the wisdom". 9 times out of 10 it's probably a bad idea in the first place.
– Joel Coehoorn
Aug 17 '09 at 21:45
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Is there any way to enforce typing on NSArray, NSMutableArray, etc.?
...Java's Generics support is heavily broken in it's own right, because they didn't put it in from the start...
– dertoni
Dec 8 '10 at 7:38
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