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Rearrange columns using cut
...made up of
one
range, or many ranges separated by commas. Selected input is written
in the same order that it is read, and is written exactly once.
It reaches field 1 first, so that is printed, followed by field 2.
Use awk instead:
awk '{ print $2 " " $1}' file.txt
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How to replace NaN values by Zeroes in a column of a Pandas Dataframe?
...360 -0.229738
4 0.000000 0.000000
To fill the NaNs in only one column, select just that column. in this case I'm using inplace=True to actually change the contents of df.
In [12]: df[1].fillna(0, inplace=True)
Out[12]:
0 0.000000
1 0.570994
2 0.000000
3 -0.229738
4 0.000000
Name...
How to calculate UILabel width based on text length?
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The selected answer is correct for iOS 6 and below.
In iOS 7, sizeWithFont:constrainedToSize:lineBreakMode: has been deprecated. It is now recommended you use boundingRectWithSize:options:attributes:context:.
CGRect expectedLab...
Permission is only granted to system app
...; Editor -> Inspections then expand Android > Lint > Correctness. Select "Using system app permission", change severity or uncheck the checkbox.
– Ezekiel Baniaga
Apr 9 '18 at 3:48
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Undo git update-index --skip-worktree
...-v will print all files with their status
grep -i ^S will filter files and select only skip worktree (S) or skip worktree and assume unchanged (s), -i means ignore case sensitive
cut -c 3- will remove status and leave only paths, cutting from the 3-rd character to the end
tr '\012' '\000' will repla...
WCF ServiceHost access rights
...this locate the Visual Studio 2008/10 application icon, right click it and select "Run as administrator"
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Date only from TextBoxFor()
...answer for MVC4 - it allows me to use jquery UI datepicker and formats the selection doing this:@Html.TextBoxFor(m => m.SomeDate, "{0:MM/dd/yyyy}", new { @id="datepicker" })
– ericb
Apr 14 '13 at 18:46
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How do I remove  from the beginning of a file?
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Open your file in Notepad++. From the Encoding menu, select Convert to UTF-8 without BOM, save the file, replace the old file with this new file. And it will work, damn sure.
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Adding a collaborator to my free GitHub account?
...ge.
Start typing the new collaborator's GitHub username into the text box.
Select the GitHub user from the list that appears below the text box.
Click the "Add" button.
The added user should now be able to push to your repository on GitHub.
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Database: To delete or not to delete records
...re actively allowing an undelete. We also have the option to display it to select users as well, without much extra work.
If you're not actively seeking to fully restore the data, but you'd still like to keep it around for monitoring (or similar) purposes. I would suggest that you figure out (to th...