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Explanation of the UML arrows

I have recently been studying UML and drawing simple diagrams with ordinary plain arrows between classes, but I know it's not enough. There are plenty of other arrows: generalization, realisation and etc. which have meaning to the diagram reader. ...
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Stopping scripters from slamming your website

...at does the design, writes the product descriptions, podcasts, blog posts, and moderates the forums. I work with CSS/HTML and am only barely familiar with other technologies. I work closely with the developers and have talked through all of the answers here (and many other ideas we've had). ...
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Entity Framework 4 - AddObject vs Attach

I have been working with Entity Framework 4 recently, and am slightly confused as to when to use ObjectSet.Attach , and ObjectSet.AddObject . ...
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Why can't the tag contain a tag inside it?

...org/TR/html4/sgml/dtd.html. It specifies which elements are block elements and which are inline. For those lists, search for the section marked "HTML content models". For the P element, it specifies the following, which indicates that P elements are only allowed to contain inline elements. <!EL...
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Dealing with commas in a CSV file

I am looking for suggestions on how to handle a csv file that is being created, then uploaded by our customers, and that may have a comma in a value, like a company name. ...
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What is a columnar database?

... simply storing the info in tables with one (or rather often two) columns (and adding the necessary layer to access the columnar data in an easy fashion). How do they differ from relational databases? They generally differ from traditional (row-oriented) databases with regards to ... performance....
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const vs constexpr on variables

... = 3.141592653589793; constexpr double PI2 = 3.141592653589793; Both PI1 and PI2 are constant, meaning you can not modify them. However only PI2 is a compile-time constant. It shall be initialized at compile time. PI1 may be initialized at compile time or run time. Furthermore, only PI2 can be...
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Git submodule add: “a git directory is found locally” issue

...ually trying to learn how to use git, including the git submodule subcommands. I already set up a server on which I can host, push and pull git repositories by using SSH. I created a main git repository "Travail" on this server in which I would like to put all my projects as submodules. ...
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How to len(generator()) [duplicate]

...'t collections after all. Generators are functions with a internal state (and fancy syntax). You can repeatedly call them to get a sequence of values, so you can use them in loop. But they don't contain any elements, so asking for the length of a generator is like asking for the length of a functio...
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Is it better to reuse a StringBuilder in a loop?

...e of StringBuilder. In a very long loop I'm manipulating a StringBuilder and passing it to another method like this: 14 A...