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Why does direction of index matter in MongoDB?

... property 'a', it is faster to search with index with property 'a' for database engine, than searching by index with 3 properties 'a', 'b', 'c'. Because index size will increase and count also increases. ex. If there are 20 chapters in book. So it is faster to go to chapter 3 and then specific page....
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Bootstrap 3 Navbar with Logo

... width is not set. If we take that logic and reverse it to be responsive based on the height we can have a responsive image that scales to the .navbar-brand height and by adding and auto set width it will adjust to proportion. max-height: 100%; width: auto; Usually we would have to add display:...
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Exploitable PHP functions

...need the ability to eval() code, to execute system commands, access a database, and read/write to files. This code can be influenced by an attacker, and that is a vulnerability. – rook Sep 19 '10 at 9:59 ...
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Junit: splitting integration test and Unit tests

...his even works when you use @RunWith() annotations to run suites or Spring-based tests. share | improve this answer | follow | ...
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Traits in PHP – any real world examples/best practices? [closed]

...tly. For example, you have a list of products that you want to filter out based on some criteria (brands, specs, whatever), or sorted by different means (price, label, whatever). You can create a sorting trait that contains different functions for different sorting types (numeric, string, date, etc...
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Valid to use (anchor tag) without href attribute?

... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers. Draft saved Draft discarded ...
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What methods of ‘clearfix’ can I use?

...onsive and thus may not provide the desired effect if layout styles change based upon media queries. A solution in pure CSS is more ideal. It adds html markup without necessarily adding any semantic value. It requires a inline definition and solution for each instance rather than a class reference t...
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What are Scala context and view bounds?

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RESTful API methods; HEAD & OPTIONS

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How do you change Background for a Button MouseOver in WPF?

...ement is caused by a Trigger in the default style for the Button, which is based on the IsMouseOver property and sets the Background and BorderBrush properties of the top-level Border element in the control template. The Button element's background is underneath the Border element's background, so c...