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What is a Context Free Grammar?

Can someone explain to me what a context free grammar is? After looking at the Wikipedia entry and then the Wikipedia entry on formal grammar, I am left utterly and totally befuddled. Would someone be so kind as to explain what these things are? ...
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Why are const parameters not allowed in C#?

It looks strange especially for C++ developers. In C++ we used to mark a parameter as const in order to be sure that its state will not be changed in the method. There are also other C++ specific reasons, like passing const ref in order to pass by ref and be sure that state will not be changed. ...
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How to highlight a current menu item?

Does AngularJS help in any way with setting an active class on the link for the current page? 29 Answers ...
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typedef struct vs struct definitions [duplicate]

I'm a beginner in C programming, but I was wondering what's the difference between using typedef when defining a structure versus not using typedef . It seems to me like there's really no difference, they accomplish the same goal. ...
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Difference between jar and war in Java

What is the difference between a .jar and a .war file? Is it only the file extension or is there something more? 13 A...
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NumPy array initialization (fill with identical values)

I need to create a NumPy array of length n , each element of which is v . 7 Answers ...
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How big can a MySQL database get before performance starts to degrade

At what point does a MySQL database start to lose performance? 15 Answers 15 ...
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How to display a dynamically allocated array in the Visual Studio debugger?

If you have a statically allocated array, the Visual Studio debugger can easily display all of the array elements. However, if you have an array allocated dynamically and pointed to by a pointer, it will only display the first element of the array when you click the + to expand it. Is there an eas...
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Difference between Fact table and Dimension table?

When reading a book for business objects, I came across the term- fact table and dimension table. 9 Answers ...
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Why should I prefer to use member initialization lists?

I'm partial to using member initialization lists with my constructors... but I've long since forgotten the reasons behind this... ...