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What are namespaces?

What are PHP Namespaces? 11 Answers 11 ...
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Shell script - remove first and last quote (") from a variable

... by a variable. I am doing it using sed, but is it efficient? If not, then what is the efficient way? 15 Answers ...
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Do I have to guard against SQL injection if I used a dropdown?

...mething as simple as the following example to make sure the posted size is what you expect. $possibleOptions = array('All', 'Large', 'Medium', 'Small'); if(in_array($_POST['size'], $possibleOptions)) { // Expected } else { // Not Expected } Then use mysqli_* if you are using a version o...
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What is the best open XML parser for C++? [duplicate]

... Wow, that’s a lot of claims. Can you back those up? What makes it better in those areas? Any reference articles? – Kissaki Sep 13 '11 at 15:14 ...
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What is the AppDelegate for and how do I know when to use it?

... approach implied by Andrew's use of the term "heart of your application". What I mean by this is that I think you should avoid lumping too many things in a central location -- good program design normally involves separating functionality by "area of concern". A delegate object is an object that g...
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What does O(log n) mean exactly?

...m afraid. I picked it because phonebooks have a large N, people understand what they are and what they do, and because it's versatile as an example. Plus I got to use robots in my explanation! A win all-around. (Also, it looks like your answer was made before I was even a member on StackOverflow to ...
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What is the difference between require() and library()?

What is the difference between require() and library() ? 8 Answers 8 ...
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How to len(generator()) [duplicate]

... @MarkAmery Part of what makes generators so flexible is that they don't have to provide a __len__ method (or a Java-like hasNext and remove, or ...). What would itertools.count return? There's no "infinity" integer in Python. And what about ...
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What is the difference between HAVING and WHERE in SQL?

What is the difference between HAVING and WHERE in an SQL SELECT statement? 20 Answers ...
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What is difference between CrudRepository and JpaRepository interfaces in Spring Data JPA?

What is the difference between CrudRepository and JpaRepository interfaces in Spring Data JPA ? 6 Answers ...