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Why do we need Abstract factory design pattern?

... All of these examples describe the Factory Method Pattern, because all of them return a single product interface. None of these is an Abstract Factory Pattern, because none of them produce a family of related product interfac...
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How to See the Contents of Windows library (*.lib)

... binary interface, this still won't get you return values, parameters, or calling convention. That information isn't encoded in the .lib at all; you have to know that ahead of time (via prototypes in header files, for example) in order to call them correctly. For functions linked with the C++ bina...
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What is the result of % in Python?

...s second operand (or zero); the absolute value of the result is strictly smaller than the absolute value of the second operand [2]. Taken from http://docs.python.org/reference/expressions.html Example 1: 6%2 evaluates to 0 because there's no remainder if 6 is divided by 2 ( 3 times ). Example 2...
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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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How to make button look like a link?

... If you don't want all buttons to be styled as links, scope the style with something like button.link {...styles...} then <button class="link">Your button</button>. This also avoids using !important which is always a good idea. ...
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Where is android studio building my .apk file?

... there is no hell, app folder at all – Shahid Karimi Sep 6 '15 at 18:55 in n...
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What are the precise rules for when you can omit parenthesis, dots, braces, = (functions), etc.?

...can omit dot when using the prefix, infix and postfix notations -- the so called operator notation. While using the operator notation, and only then, you can omit the parenthesis if there is less than two parameters passed to the method. Now, the operator notation is a notation for method-call, whi...
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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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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 ...
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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....