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Find rows with multiple duplicate fields with Active Record, Rails & Postgres
...o, this is a little unrelated but handy. If you want to see how times each combination was found, put .size at the end:
User.select(:first,:email).group(:first,:email).having("count(*) > 1").size
and you'll get a result set back that looks like this:
{[nil, nil]=>512,
["Joe", "test@test.c...
Postgres NOT in array
...to ANY instead of IN as your recipient_ids input list grows: stackoverflow.com/questions/1009706/…
– derekm
Jan 9 '17 at 16:56
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SQL Server: converting UniqueIdentifier to string in a case statement
...questID)
Here's the link where I found this info:
http://msdn.microsoft.com/en-us/library/ms187928.aspx
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How to redirect 404 errors to a page in ExpressJS?
...
I found this example quite helpful:
https://github.com/visionmedia/express/blob/master/examples/error-pages/index.js
So it is actually this part:
// "app.router" positions our routes
// above the middleware defined below,
// this means that Express will attempt
// to match ...
Android LinearLayout : Add border with shadow around a LinearLayout
...encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
<item>
<shape android:shape="rectangle">
<solid android:color="#CABBBBBB"/>
<corners android:radius="2dp" />
</shape>
<...
How to add some non-standard font to a website?
...
community wiki
2 revs, 2 users 83%hangy
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How to launch Safari and open URL from iOS app
...BAction in the header .h files as follows:
- (IBAction)openDaleDietrichDotCom:(id)sender;
I added a UIButton on the Settings page containing the text that I want to link to.
I connected the button to IBAction in File Owner appropriately.
Then implement the following:
Objective-C
- (IBAction)o...
How do I alias commands in git?
...u just need to add lines to ~/.gitconfig
[alias]
st = status
ci = commit -v
Or you can use the git config alias command:
$ git config --global alias.st status
On unix, use single quotes if the alias has a space:
$ git config --global alias.ci 'commit -v'
On windows, use double quot...
List of remotes for a Git repository?
...
You can get a list of any configured remote URLs with the command git remote -v.
This will give you something like the following:
base /home/***/htdocs/base (fetch)
base /home/***/htdocs/base (push)
origin git@bitbucket.org:*** (fetch)
origin git@bitbucket.org:*** (push)
...
Convert a PHP object to an associative array
...Output:
array(2) {
'foo' => int(1)
'bar' => int(2)
}
Example: Complex Object
class Foo
{
private $foo;
protected $bar;
public $baz;
public function __construct()
{
$this->foo = 1;
$this->bar = 2;
$this->baz = new StdClass;
}
}
...