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How do I set up DNS for an apex domain (no www) pointing to a Heroku app?

... (Note: root, base, apex domains are all the same thing. Using interchangeably for google-foo.) Traditionally, to point your apex domain you'd use an A record pointing to your server's IP. This solution doesn't scale and isn't viable for a cloud platform like H...
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What does @@variable mean in Ruby?

...the classes; setting the value in an instance of one changes the value for all other instances of that class and even child classes, where a variable named @shared, with one @, would not be. [Update] As Phrogz mentions in the comments, it's a common idiom in Ruby to track class-level data with an ...
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Input type=password, don't let browser remember the password

...pped support for this attribute. See Is autocomplete="off" compatible with all modern browsers? This is arguably something that should be left up to the user rather than the web site designer. share | ...
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Why is it necessary to set the prototype constructor?

...}; // define the Student class function Student(name) { Person.call(this, name); } // inherit Person Student.prototype = Object.create(Person.prototype); Now what happens when we create a new Student and copy it? var student1 = new Student("trinth"); console.log(student1....
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Removing whitespace between HTML elements when using line breaks

...0 in width, and the images won't be affected. Don't know if this works in all browsers, but I tried it with Chromium and some <li> elements with display: inline-block;. share | improve this a...
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What are MVP and MVC and what is the difference?

... many tools encourage you are likely to come across three design patterns called Model-View-Controller , Model-View-Presenter and Model-View-ViewModel . My question has three parts to it: ...
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Join vs. sub-query

... @user1735921 IMO it depends ... Generally, it's very important the readability of the code, because it is of great importance for later management of it... Let's remember the famous statement of Donald Knuth: "Premature optimization is the root of all evil (or a...
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Tips for a successful AppStore submission? [closed]

...Store. Your bundle identifier, as sascha says, should be unique and is usually your domain backwards. This needs to match the App Id you created in the Developer Portal. The Display Name (CFBundleDisplayName) is how it appears on the home screen. One important thing I found about this is that it c...
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Why does ~True result in -2?

...00000001 and ~1 is: 11111110 Which is -2 in Two's complement1 1 Flip all the bits, add 1 to the resulting number and interpret the result as a binary representation of the magnitude and add a negative sign (since the number begins with 1): 11111110 → 00000001 → 00000010 ↑ ...
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How to revert multiple git commits?

...e git checkout -f A -- . Will not delete these, you will have to do it manually. I applied this strategy now, thanks Jakub – oma Mar 31 '11 at 14:56 18 ...