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How do you find the disk size of a Postgres / PostgreSQL table and its indexes
... JOIN pg_stat_all_indexes psai ON x.indexrelid = psai.indexrelid )
AS foo
ON t.tablename = foo.ctablename
WHERE t.schemaname='public'
ORDER BY 1,2;
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How to define custom configuration variables in rails
... target a specific environment) :
YourApp::Application.config.yourKey = 'foo'
This will be accessible in controller or views like this:
YourApp::Application.config.yourKey
(YourApp should be replaced by your application name.)
Note: It's Ruby code, so if you have a lot of config keys, you ca...
Not class selector in jQuery
...
You can use the :not filter selector:
$('foo:not(".someClass")')
Or not() method:
$('foo').not(".someClass")
More Info:
http://api.jquery.com/not-selector/
http://api.jquery.com/not/
...
Remove last item from array
...
When using pop(), be sure not to do jQuery('#foo').val(numbers.pop()), unless you only want to place the last item of the array into the field. pop() returns the element removed. As Stuart has done, first do numbers.pop(); and then do jQuery('#foo').val(numbers)...
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Using Case/Switch and GetType to determine the object [duplicate]
... }
}
return s;
}
}
Usage:
new Switch(foo)
.Case<Fizz>
(action => { doingSomething = FirstMethodCall(); })
.Case<Buzz>
(action => { return false; })
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How to change the font on the TextView?
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xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:foo="http://schemas.android.com/apk/res-auto"
android:orientation="vertical" android:layout_width="fill_parent"
android:layout_height="fill_parent">
<com.mypackage.TextViewPlus
android:id="@+id/text...
How to get the first element of an array?
...
var a = []; a[7] = 'foo'; alert(a[0]);
– Petah
Jun 16 '15 at 0:41
75
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Calculate a percent with SCSS/SASS
...kGinanto for px you can just add +px to the end of the line, e.g. width: ($foo + $bar) +px
– DisgruntledGoat
Mar 6 '13 at 21:52
2
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What's the easiest way to install a missing Perl module?
...dules that you want to install and let it do it's work.
$prompt> cpan Foo::Bar
If you don't give it any arguments it starts the CPAN.pm shell. This works on Unix, Mac, and should be just fine on Windows (especially Strawberry Perl).
There are several other things that you can do with the cpa...
Android - set TextView TextStyle programmatically?
...="fill_parent"
android:layout_height="wrap_content
android:text="FOO" />
And in the java code of your Activity you do this:
TextView textViewTitle = (TextView) findViewById(R.id.text_view_title);
textViewTitle.setTextAppearance(this, R.style.RedHUGEText);
It worked for me! And it a...