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How to prevent browser page caching in Rails

... Finally figured this out - http://blog.serendeputy.com/posts/how-to-prevent-browsers-from-caching-a-page-in-rails/ in application_controller.rb After Rails 5: class ApplicationController < ActionController::Base before_a...
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How to initialize static variables

... I love PHP, but it's really odd sometimes. – Marco Demaio Nov 10 '11 at 21:46 6 ...
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What are Unwind segues for and how do you use them?

... In a Nutshell An unwind segue (sometimes called exit segue) can be used to navigate back through push, modal or popover segues (as if you popped the navigation item from the navigation bar, closed the popover or dismissed the modally presented view controller). On to...
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What is “the inverse side of the association” in a bidirectional JPA OneToMany/ManyToOne association

...ms to be the owner of the orders. But in the SQL world, one item will actually contain a pointer to the other. Since there is 1 customer for N orders, each order contains a foreign key to the customer it belongs to. This is the "connection" and this means the order "owns" (or literally contains) th...
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Why would I ever use push_back instead of emplace_back?

...ob is to generate the code you wrote. The optimizing compiler's job is actually to generate the code you would have written if you were an expert on platform-specific optimizations and did not care about maintainability, just performance. The actual difference between these two statements is that t...
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Get querystring from URL using jQuery [duplicate]

...hoping to find a solution that had had some testing done on it and covered all the bases (I'm saying that's what he was HOPING to find, not that jQuery would necessarily provide it). – kghastie Nov 5 '13 at 22:19 ...
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What is the difference between Cygwin and MinGW?

...Unix-based applications to Windows much easier, by emulating many of the small details that Unix-based operating systems provide, and are documented by the POSIX standards. Your application can use Unix feature such as pipes, Unix-style file and directory access, and so forth, and it can be compile...
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Why em instead of px?

...something else like the size of the browser window or the font size. Like all the other absolute units, px units don't scale according to the width of the browser window. Thus, if your entire page design uses absolute units such as px rather than %, it won't adapt to the width of the browser. This...
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Check if key exists and iterate the JSON array using Python

... If all you want is to check if key exists or not h = {'a': 1} 'b' in h # returns False If you want to check if there is a value for key h.get('b') # returns None Return a default value if actual value is missing h.get('b'...
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How to handle invalid SSL certificates with Apache HttpClient? [duplicate]

...thority, but a self signed or issued by a private CMS. Don't panic. All you need to do is to add the server certificate to your trusted Java key store if your client is written in Java. You might be wondering how as if you can not access the machine where the server is installed. ...