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How to write multiple line property value using PropertiesConfiguration?
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Check the User Guide for Properties files:
Special Characters and Escaping:
If you need a special character in a property like a line feed, a
tabulation or an unicode character, you can specify it with the same
escaped notation used for Java Strings. The list separator ("," by
defau...
Regex how to match an optional character
...\s+([A-Z])\d{3}(\d{4})(\d{2})(\d{2})
But: do you really need 11 separate capturing groups? And if so, why don't you capture the fourth-to-last group of digits?
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Find the extension of a filename in Ruby
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You would want to do File.extname("example.png").downcase to ensure that the extension is not in all caps
– Sam Eaton
Oct 30 '15 at 16:08
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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
1
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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.
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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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