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Rolling back a remote Git repository
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135
You can use git revert <commit>… for all the n commits, and then push as usual, keepin...
Convert data.frame column format from character to factor
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201
Hi welcome to the world of R.
mtcars #look at this built in data set
str(mtcars) #allows you t...
Why C# fails to compare two object types with each other but VB doesn't?
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168
In C#, the == operator (when applied to reference type expressions) performs a reference equal...
What does the number in parentheses shown after Unix command names in manpages mean?
For example: man(1) , find(3) , updatedb(2) ?
7 Answers
7
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RRSet of type CNAME with DNS name foo.com. is not permitted at apex in zone bar.com
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As per RFC1912 section 2.4:
A CNAME record is not allowed to coexist with any other data. In
other words, if suzy.podunk.xx is an alias for sue.podunk.xx, you
can't also have an MX record for suzy.podunk.edu, or an A record, or
e...
Why should I implement ICloneable in c#?
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117
You shouldn't. Microsoft recommends against implementing ICloneable because there's no clear i...
Django ModelForm: What is save(commit=False) used for?
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106
That's useful when you get most of your model data from a form, but need to populate some null...
How can I tell when a MySQL table was last updated?
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15 Answers
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Active
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No “pull” in Git Gui?
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111
Well, I found this useful forum post:
http://git.661346.n2.nabble.com/No-quot-pull-quot-in-git...
Working with time DURATION, not time of day
...me" data type - just change the format!
Excels time/date format is simply 1.0 equals 1 full day (starting on 1/1/1900). So 36 hours would be 1.5. If you change the format to [h]:mm, you'll see 36:00.
Therefore, if you want to work with durations, you can simply use subtraction, e.g.
A1: Start: ...