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Determine if ActiveRecord Object is New
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edited Dec 7 '13 at 18:10
answered Sep 10 '13 at 22:35
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Delete specific line number(s) from a text file using sed?
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If you want to delete lines 5 through 10 and 12:
sed -e '5,10d;12d' file
This will print the results to the screen. If you want to save the results to the same file:
sed -i.bak -e '5,10d;12d' file
This will back the file up to file.bak, and delete the given...
jQuery callback for multiple ajax calls
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answered Dec 6 '10 at 18:18
subhazesubhaze
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GitHub: make fork an “own project”
...new repo from scratch.
– Johnco
Feb 10 '17 at 15:28
1
It's worth noting that GitHub Support gave ...
Django ModelForm: What is save(commit=False) used for?
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That's useful when you get most of your model data from a form, but need to populate some null...
How to check if a database exists in SQL Server?
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answered Jan 8 '10 at 16:19
EduardoEduardo
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Compare floats in php
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answered Jun 30 '10 at 11:57
JoeyJoey
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Case insensitive access for generic dictionary
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edited Jul 30 '19 at 10:47
answered Nov 5 '12 at 10:44
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Javascript object Vs JSON
... alert('hello');
}
}); // returns the string "{"foo":"2011-11-28T10:21:33.939Z"}"
For parsing a JSON string, is the method below recommended? var javascriptObj = JSON.parse(jSonString);
Yes, but older browsers don't support JSON natively (IE <8). To support these, you should inclu...
SQL join: selecting the last records in a one-to-many relationship
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answered Jan 21 '10 at 17:35
Bill KarwinBill Karwin
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