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How to display unique records from a has_many through relationship?
...e scopes to filter your relation's queries, scroll down to section 4.3.3:
http://guides.rubyonrails.org/association_basics.html#has-many-association-reference
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How to make overlay control above all other controls?
...the control to be put on top a higher ZIndex.
From MSDN:
<Page xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" WindowTitle="ZIndex Sample">
<Canvas>
<Rectangle Canvas.ZIndex="3" Width="100" Height="100" Canvas.Top="100" Canvas.Left="100" Fill="blue"/>
...
Percentage Height HTML 5/CSS
...will expand to fill the container. Long article from 2009 on this subject: http://alistapart.com/article/creating-intrinsic-ratios-for-video
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What's the (hidden) cost of Scala's lazy val?
...
I've written a post with regard to this issue https://dzone.com/articles/cost-laziness
In nutshell, the penalty is so small that in practice you can ignore it.
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PostgreSQL: Modify OWNER on all tables simultaneously in PostgreSQL
...pkrs (couldn't find his name) created one that also changes the functions: https://gist.github.com/bspkrs/b997ed7f1eb1268f3403
– elysch
May 16 '16 at 15:15
...
Do C# Timers elapse on a separate thread?
...ns on the same thread on which the SynchronizingObject was instantiated."
http://msdn.microsoft.com/en-us/magazine/cc164015.aspx#S2
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What are the differences between vector and list data types in R?
...
This and similar introductory questions are answered in http://www.burns-stat.com/pages/Tutor/hints_R_begin.html
It is meant to be a gentle introduction that gets you up and running with R as quickly as possible. To some extent it succeeds.
--- Edit: --
An attempt to explain ...
When should use Readonly and Get only properties
...ulation posts series of Mark Seemann about properties and backing fields:
http://blog.ploeh.dk/2011/05/24/PokayokeDesignFromSmellToFragrance.aspx
taken from Mark's example:
public class Fragrance : IFragrance
{
private readonly string name;
public Fragrance(string name)
{
if ...
pip install from git repo branch
...
Prepend the url prefix git+ (See VCS Support):
pip install git+https://github.com/tangentlabs/django-oscar-paypal.git@issue/34/oscar-0.6
And specify the branch name without the leading /.
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What are the differences in die() and exit() in PHP?
...ection. exit() doesn't close the connection.
die():
<?php
header('HTTP/1.1 304 Not Modified');
die();
?>
exit():
<?php
header('HTTP/1.1 304 Not Modified');
exit();
?>
Results:
exit():
HTTP/1.1 304 Not Modified
Connection: Keep-Alive
Keep-Alive: timeout=5, max...