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How do I get the current absolute URL in Ruby on Rails?
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For Rails 3.2 or Rails 4+
You should use request.original_url to get the current URL.
This method is documented at original_url method, but if you're curious, the implementation is:
def original_url
base_url + original_fu...
Is there a more elegant way of adding an item to a Dictionary safely?
...y already exists otherwise I get a " key already exists in dictionary " error. The code below solves this but is clunky.
5 ...
Spring classpath prefix difference
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there is one more interesting difference between them. See my question also : stackoverflow.com/questions/16985770/…
– Eugene
Jun 8 '13 at 18:48
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When is .then(success, fail) considered an antipattern for promises?
...ss, fail) is an antipattern . I don't quite understand its explanation as for the try and catch.
What's wrong with this the following?
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The Definitive C++ Book Guide and List
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Beginner
Introductory, no previous programming experience
C++ Primer * (Stanley Lippman, Josée Lajoie, and Barbara E. Moo) (updated for C++11) Coming at 1k pages, this is a very thorough introduction into C++ that covers just about everythi...
A monad is just a monoid in the category of endofunctors, what's the problem?
...s Iry, from his highly entertaining Brief, Incomplete and Mostly Wrong History of Programming Languages, in which he fictionally attributes it to Philip Wadler.
The original quote is from Saunders Mac Lane in Categories for the Working Mathematician, one of the foundational texts of Category Theory....
How to copy part of an array to another array in C#?
...nd Skip() are the most popular answers, as well as Array.CopyTo().
A purportedly faster extension method is described here.
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What does `:_*` (colon underscore star) do in Scala?
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It "splats"1 the sequence.
Look at the constructor signature
new Elem(prefix: String, label: String, attributes: MetaData, scope: NamespaceBinding,
child: Node*)
which is called as
new Elem(prefix, label, attributes, scope,
child1, child2, ... childN)...
CORS - How do 'preflight' an httprequest?
... HTTP request to WCF service (that I own). I have read several techniques for working with the cross domain scripting limitations. Because my service must accommodate both GET and POST requests I cannot implement some dynamic script tag whose src is the URL of a GET request. Since I am free to make ...
Programmatically Request Access to Contacts
... noticed that my code to add a contact to iPhone's address book no longer works. I believe this is a permission related problem, since Apple now requires user permission before accessing contacts (fixing this issue).
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