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Difference between a theta join, equijoin and natural join
I'm having trouble understanding relational algebra when it comes to theta joins, equijoins and natural joins. Could someone please help me better understand it? If I use the = sign on a theta join is it exactly the same as just using a natural join?
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Custom views with Storyboard
... UIView and the MyWidget class is the File Owner of the UIView. In the init of this widget I do a loadNibNamed .
3 Answe...
In laymans terms, what does 'static' mean in Java? [duplicate]
I have been told several definitions for it, looked on Wikipedia, but as a beginner to Java I'm still not sure what it means. Anybody fluent in Java and idiot?
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setting an environment variable in virtualenv
I have a Heroku project that uses environment variables to get its configuration, but I use virtualenv to test my app locally first.
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Keep overflow div scrolled to bottom unless user scrolls up
I have a div that is only 300 pixels big and I want it to when the page loads scroll to the bottom of the content. This div has content dynamically added to it and needs to stay scrolled all the way down. Now if the user decides to scroll up I don't want it to jump back to the bottom until the user ...
How to implement a secure REST API with node.js
I start planning a REST API with node.js ,express and mongodb. The API provides data for a website (public and private area) and maybe later a mobile app. The frontend will be developed with AngularJS.
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Creating an instance of class
... Foo ();
Creates an object of type Foo in dynamic memory. foo1 points to it. Normally, you wouldn't use raw pointers in C++, but rather a smart pointer. If Foo was a POD-type, this would perform value-initialization (it doesn't apply here).
/* 2 */ Foo* foo2 = new Foo;
Identical to before, b...
How to get the unique ID of an object which overrides hashCode()?
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System.identityHashCode(yourObject) will give the 'original' hash code of yourObject as an integer. Uniqueness isn't necessarily guaranteed. The Sun JVM implementation will give you a value which is related to the original memory address...
Blank space at top of UITextView in iOS 10
I have UITextView with some text in it. Everything was fine with iOS 6 but now with iOS 7 it leaves the blank space on top and then place the text below the middle of the textview.
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Passing current scope to an AngularJS Service
Is it correct to pass the "current" $scope to an AngularJS service?
4 Answers
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