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How to sort the result from string_agg()
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With postgres 9.0+ you can write:
select string_agg(product,' | ' order by product) from "tblproducts"
Details here.
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What is the difference between t.belongs_to and t.references in rails?
...term. They renamed before_filter to before_action, which was a good move because it reduced ambiguity. One advantage of references is that it's simply different from what you use in the model, so you get less confused if you're in the model or migration. But any term that differs would satisfy this ...
Specify pane percentage in tmuxinator project
How can I specify a pane percentage in tmuxinator ?
1 Answer
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Rails: where does the infamous “current_user” come from?
...on after logging in. It also assumes your app has and needs users, authentication, etc.
Typically, it's something like:
class ApplicationController < ActionController::Base
def current_user
return unless session[:user_id]
@current_user ||= User.find(session[:user_id])
end
end
This...
Uninstall ReSharper 4.5
...harper 4.5 in Visual Studio 2008. Now I want to install ReSharper 5, but I can't do it before I uninstall ReSharper 4.5.
4 ...
Scala downwards or decreasing for loop?
In Scala, you often use an iterator to do a for loop in an increasing order like:
7 Answers
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Setting focus on an HTML input box on page load
...t box when the page loads (example: google).
My page is very simple, yet I can't figure out how to do this.
4 Answers
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Rails: Logging the entire stack trace of an exception
I have been trying to figure out the right way to log a stack trace. I came across this link which states that logger.error $!, $!.backtrace is the way to go but that does not work for me log_error does. As per documentation I do not see how passing a second argument to the error method would ...
Static member initialization in a class template
...rasoon: actually Prasoon seems to be the first. But I still accept sbi's because of the comment about the ODR (which was my primary concern).
– Alexandre C.
Jul 12 '10 at 16:00
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Mockito: List Matchers with generics
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Note: this is deprecated in Mockito 2.* and will be removed in Mockito 3. Deprecated because Java 8 compiler can infer the type now.
– Kip
Nov 29 '16 at 0:02
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