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Android: Generate random color on click?

I have an ImageView , in which I am programmaticly creating drawables and presenting them to the user. My goal is to click on said ImageView and change the drawable's color. ...
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What are the parameters sent to .fail in jQuery?

I can’t find the documentation on what the names of the three parameters are when $.ajax fails. 2 Answers ...
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What does href expression do?

I have seen the following href used in webpages from time to time. However, I don't understand what this is trying to do or the technique. Can someone elaborate please? ...
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What do numbers using 0x notation mean?

What does a 0x prefix on a number mean? 5 Answers 5 ...
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Replacing Pandas or Numpy Nan with a None to use with MysqlDB

I am trying to write a Pandas dataframe (or can use a numpy array) to a mysql database using MysqlDB . MysqlDB doesn't seem understand 'nan' and my database throws out an error saying nan is not in the field list. I need to find a way to convert the 'nan' into a NoneType. ...
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Find difference between timestamps in seconds in PostgreSQL

I have a table in PostgreSQL 8.3 with 2 timestamp columns. I would like to get the difference between these timestamps in seconds. Could you please help me how to get this done? ...
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Get the first element of an array

I have an array: 39 Answers 39 ...
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What is a vertical tab?

What was the original historical use of the vertical tab character ( \v in the C language, ASCII 11)? 10 Answers ...
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Creating a zero-filled pandas data frame

What is the best way to create a zero-filled pandas data frame of a given size? 6 Answers ...
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Python's time.clock() vs. time.time() accuracy?

Which is better to use for timing in Python? time.clock() or time.time()? Which one provides more accuracy? 16 Answers ...