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Are nullable types reference types?

When I declare an int as nullable 6 Answers 6 ...
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Python: Append item to list N times

This seems like something Python would have a shortcut for. I want to append an item to a list N times, effectively doing this: ...
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What are the Differences Between “php artisan dump-autoload” and “composer dump-autoload”?

I am pretty new to Laravel 4 and Composer. While I do Laravel 4 tutorials, I couldn't understand the difference between those two commands; php artisan dump-autoload and composer dump-autoload What's the difference between them? ...
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How does bash tab completion work?

... spending a lot of time in the shell lately and I'm wondering how the tab autocomplete works. What's the mechanism behind it? How does the bash know the contents of every directory? ...
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Django queries - id vs pk

When writing django queries one can use both id/pk as query parameters. 2 Answers 2 ...
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Switch to another Git tag

How do I check out version version/tag 1.1.4 of the rspec bundle ? 2 Answers 2 ...
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What is the difference between Class.this and this in Java

... In this case, they are the same. The Class.this syntax is useful when you have a non-static nested class that needs to refer to its outer class's instance. class Person{ String name; public void setName(String name){ this.name = name; } class Displayer { ...
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Numpy how to iterate over columns of array?

Suppose I have and m x n array. I want to pass each column of this array to a function to perform some operation on the entire column. How do I iterate over the columns of the array? ...
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Add a fragment to the URL without causing a redirect?

Is there is a way how to add hash # to my URL without redirect? 3 Answers 3 ...
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Is XML case-sensitive?

Short question 2 Answers 2 ...