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.htaccess: Invalid command 'RewriteEngine', perhaps misspelled or defined by a module not included i

I have this error when trying to browse php files locally 8 Answers 8 ...
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Why don't structs support inheritance?

I know that structs in .NET do not support inheritance, but its not exactly clear why they are limited in this way. 10 An...
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Input text dialog Android

When a user clicks a Button in my App (which is printed in a SurfaceView ), I'd like a text Dialog to appear and I would like to store the result in a String . I'd like the text Dialog to overlay the current screen. How can I do this? ...
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Best way to initialize (empty) array in PHP

In certain other languages (AS3 for example), it has been noted that initializing a new array is faster if done like this var foo = [] rather than var foo = new Array() for reasons of object creation and instantiation. I wonder whether there are any equivalences in PHP? ...
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Find MongoDB records where array field is not empty

All of my records have a field called "pictures". This field is an array of strings. 11 Answers ...
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How to generate a number of most distinctive colors in R?

I am plotting a categorical dataset and want to use distinctive colors to represent different categories. Given a number n , how can I get n number of MOST distinctive colors in R? Thanks. ...
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Running multiple AsyncTasks at the same time — not possible?

I'm trying to run two AsyncTasks at the same time. (Platform is Android 1.5, HTC Hero.) However, only the first gets executed. Here's a simple snippet to describe my problem: ...
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Create PostgreSQL ROLE (user) if it doesn't exist

How do I write an SQL script to create a ROLE in PostgreSQL 9.1, but without raising an error if it already exists? 10 Answ...
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How to use Comparator in Java to sort

I learned how to use the comparable but I'm having difficulty with the Comparator. I am having a error in my code: 14 Answ...
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Get exit code of a background process

I have a command CMD called from my main bourne shell script that takes forever. 12 Answers ...