tomwu - Developer IT

making a command run once every hour

- by tomwu

I have an indexer for sphinx, and i want it to run once every hour in linux. How would i do this?

facebook or digg sharing, how does it know which part of the story to use as the short summary?

- by tomwu

If I am trying to make my site sharable through digg and facebook, can i hard set which section of the page will be used as the short description? thanks

Google map infowindow maxWidth issues

- by tomwu

USing version 3, the maxWidth doesnt seem to work if it's less than 200

how does google map determine locations for phones without gps

http://www.google.com/mobile/maps/ Using this on phones without gps, the locatiosn can be obtained as well. I am currently using the html5 geocoder/gear for obtaining locations. However this only works for iphone and android. BUt how does google map get the information from phones without this capbility?

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Algorithms for finding the intersections of intervals

- by tomwu

I am wondering how I can find the number of intervals that intersect with the ones before it. for the intervals [2, 4], [1, 6], [5, 6], [0, 4], the output should be 2. from [2,4] [5,6] and [5,6] [0,4]. So now we have 1 set of intervals with size n all containing a point a, then we add another set of intervals size n as well, and all of the intervals are to the right of a. Can you do this in O(nlgn) and O(nlg^2n)?

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how does facebook/digg get all of the iamges for a webpage?

- by tomwu

DO they use a php page to analyze the link, and return all of the images as josn? Is there a way to do this with just javascript, so you dont have to go to the server to analyze the page?

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making a command run once every hour [closed]

- by tomwu

I have an indexer for sphinx, and i want it to run once every hour in linux. How would i do this?

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tight (T) bound

- by tomwu

Can someone explain this to me? Such as this: Given a function: for k = 1 to lg(n) for j = 1 to n x=x+1 How would I analyze the tight (T) bound?

Developer IT