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What is pseudopolynomial time? How does it differ from polynomial time?
What is pseudopolynomial time ? How does it differ from polynomial time? Some algorithms that run in pseudopolynomial time have runtimes like O(nW) (for the 0/1 Knapsack Problem ) or O(√n) (for trial division ); why doesn't that count as polynomial time?
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How to reset (clear) form through JavaScript?
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answered Sep 24 '10 at 11:43
Nick Craver♦Ni...
Convert Unix timestamp into human readable date using MySQL
Is there a MySQL function which can be used to convert a Unix timestamp into a human readable date? I have one field where I save Unix times and now I want to add another field for human readable dates.
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Update just one gem with bundler
I use bundler to manage dependencies in my rails app, and I have a gem hosted in a git repository included as followed:
8 A...
Text size and different android screen sizes
...ut I can't adjust the text size for different screen sizes. I try to use 'sp' as size units in my custom style:
11 Answers
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JPA CascadeType.ALL does not delete orphans
I am having trouble deleting orphan nodes using JPA with the following mapping
11 Answers
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Android Json and null values
How can I detect when a json value is null?
for example: [{"username":null},{"username":"null"}]
6 Answers
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How to get WordPress post featured image URL
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Check the code below and let me know if it works for you.
<?php if (has_post_thumbnail( $post->ID ) ): ?>
<?php $image = wp_get_attachment_image_src( get_post_thumbnail_id( $post->ID ), 'single-post-thumbnail' ); ?>
<div id="custom-bg" style="background-image: ur...
Python Graph Library [closed]
I'm writing a python application that will make heavy use of a graph data structure. Nothing horribly complex, but I'm thinking some sort of graph/graph-algorithms library would help me out. I've googled around, but I don't find anything that particularly leaps out at me.
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Get operating system info
I recently started wondering about sites like http://thismachine.info/ that get the user's operating system info. I have not been able to find out how to do that with PHP, and wanted to try to figure it out.
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