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What are important languages to learn to understand different approaches and concepts? [closed]

When all you have is a pair of bolt cutters and a bottle of vodka, everything looks like the lock on the door of Wolf Blitzer's boathouse. (Replace that with a hammer and a nail if you don't read xkcd) ...
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What is a segmentation fault?

What is a segmentation fault? Is it different in C and C++? How are segmentation faults and dangling pointers related? 14 A...
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Why is sizeof considered an operator?

Why is sizeof considered an operator and not a function? 10 Answers 10 ...
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In C++, what is a virtual base class?

I want to know what a " virtual base class " is and what it means. 11 Answers 11 ...
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Relational Database Design Patterns? [closed]

Design patterns are usually related to object oriented design. Are there design patterns for creating and programming relational databases? Many problems surely must have reusable solutions. ...
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Why should casting be avoided? [closed]

I generally avoid casting types as much as possible since I am under the impression that it's poor coding practice and may incur a performance penalty. ...
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How do I detect a click outside an element?

I have some HTML menus, which I show completely when a user clicks on the head of these menus. I would like to hide these elements when the user clicks outside the menus' area. ...
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Last non-empty cell in a column

Does anyone know the formula to find the value of the last non-empty cell in a column, in Microsoft Excel? 23 Answers ...
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How do you make a web application in Clojure? [closed]

I suppose this is a strange question to the huge majority of programmers that work daily with Java. I don't. I know Java-the-language, because I worked on Java projects, but not Java-the-world. I never made a web app from scratch in Java. If I have to do it with Python, Ruby, I know where to go (Dja...
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Programmatically Lighten or Darken a hex color (or rgb, and blend colors)

Here is a function I was working on to programmatically lighten or darken a hex color by a specific amount. Just pass in a string like "3F6D2A" for the color ( col ) and a base10 integer ( amt ) for the amount to lighten or darken. To darken, pass in a negative number (i.e. -20 ). ...