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How would I get a cron job to run every 30 minutes?

... | edited Sep 27 '11 at 13:45 Tim Cooper 138k3434 gold badges286286 silver badges249249 bronze badges ...
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Convert a list to a data frame

I have a nested list of data. Its length is 132 and each item is a list of length 20. Is there a quick way to convert this structure into a data frame that has 132 rows and 20 columns of data? ...
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Can't install Ruby under Lion with RVM – GCC issues

... questions regarding this problem are due to missing Xcode; I have Xcode 4.2 installed. 16 Answers ...
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How to override trait function and call it from the overridden function?

... | edited Feb 24 '17 at 21:33 Maciej Pyszyński 7,81133 gold badges2020 silver badges2727 bronze badges ...
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How to display an unordered list in two columns?

...http://www.w3schools.com/cssref/css3_pr_columns.asp CSS: ul { columns: 2; -webkit-columns: 2; -moz-columns: 2; } http://jsfiddle.net/HP85j/8/ Legacy Browsers Unfortunately for IE support you will need a code solution that involves JavaScript and dom manipulation. This means that anytime ...
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How do I write data into CSV format as string (not file)?

I want to cast data like [1,2,'a','He said "what do you mean?"'] to a CSV-formatted string. 6 Answers ...
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How to pass parameters on onChange of html select

...lt;option value="Value1">Text1</option> <option value="Value2">Text2</option> <option value="Value3">Text3</option> </select> The above example gets you the selected value of combo box on OnChange event. ...
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Regex to validate password strength

... | edited Mar 29 '16 at 10:14 Alan Moore 66.5k1111 gold badges8787 silver badges145145 bronze badges ...
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How do you express binary literals in Python?

... 298 For reference—future Python possibilities: Starting with Python 2.6 you can express binary l...
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Request failed: unacceptable content-type: text/html using AFNetworking 2.0

I'm trying out the new version 2.0 of AFNetworking and I'm getting the error above. Any idea why this is happening? Here's my code: ...