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Alter MySQL table to add comments on columns

I have been checking the MySQL Documentation for ALTER TABLE and it does not seem to include a way to add or modify a comment to a column. How can I do this? ...
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Number of occurrences of a character in a string [duplicate]

I am trying to get the number of occurrences of a certain character such as & in the following string. 6 Answers ...
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Switch to another Git tag

... Clone the repository as normal: git clone git://github.com/rspec/rspec-tmbundle.git RSpec.tmbundle Then checkout the tag you want like so: git checkout tags/1.1.4 This will checkout out the tag in a 'detached HEAD' state. In this state, "you can ...
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Numpy how to iterate over columns of array?

Suppose I have and m x n array. I want to pass each column of this array to a function to perform some operation on the entire column. How do I iterate over the columns of the array? ...
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Logback to log different messages to two files

I am using logback/slf4j to do my logging. I want to parse my log file to analyze some data, so instead of parsing a great big file (mostly consisting of debug statements) I want to have two logger instances which each log to a separate file; one for analytics and one for all purpose logging. Does a...
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iPhone: Detecting user inactivity/idle time since last screen touch

Has anybody implemented a feature where if the user has not touched the screen for a certain time period, you take a certain action? I'm trying to figure out the best way to do that. ...
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Get local href value from anchor (a) tag

...e href value but directs it to a slightly different place than it would normally go. The tag looks like 6 Answers ...
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Python datetime - setting fixed hour and minute after using strptime to get day,month,year

I've successfully converted something of 26 Sep 2012 format to 26-09-2012 using: 3 Answers ...
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json.net has key method?

If my response has key "error" I need to process error and show warning box. 3 Answers ...
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How to print the values of slices

I want to see the values which are in the slice. How can I print them? 7 Answers 7 ...