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Only read selected columns
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Say the data are in file data.txt, you can use the colClasses argument of read.table() to skip columns. Here the data in the first 7 columns are "integer" and we set the remaining 6 columns to "NULL" indicating they should be skipped
> read....
psql - save results of command to a file
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From psql's help (\?):
\o [FILE] send all query results to file or |pipe
The sequence of commands will look like this:
[wist@scifres ~]$ psql db
Welcome to psql 8.3.6, the PostgreSQL interactive terminal
db=>\o out.txt
db=>\dt
db=>\q
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In vim, how do I get a file to open at the same line number I closed it at last time?
I want to configure vim to open a file at the same place I left off at.
7 Answers
7
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Unlink of file Failed. Should I try again?
Something wrong is going on with one of the files in my local git repository. When I'm trying to change the branch it says:
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Why do we need the “finally” clause in Python?
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You can use finally to make sure files or resources are closed or released regardless of whether an exception occurs, even if you don't catch the exception. (Or if you don't catch that specific exception.)
myfile = open("test.txt", "w")
try:
myfile.wri...
How to read a CSV file into a .NET Datatable
How can I load a CSV file into a System.Data.DataTable , creating the datatable based on the CSV file?
22 Answers
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Application not picking up .css file (flask/python)
...ng a template, that I am attempting to style with an external style sheet. File structure is as follows.
10 Answers
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Directory does not exist. Parameter name: directoryVirtualPath
...roblem and found out that I had some bundles that pointed to non-exisiting files using {version} and * wildcards such as
bundles.Add(new ScriptBundle("~/bundles/jquery").Include(
"~/Scripts/jquery-{version}.js"));
I removed all of those and the error went away.
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How can I run dos2unix on an entire directory? [closed]
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find . -type f -print0 | xargs -0 dos2unix
Will recursively find all files inside current directory and call for these files dos2unix command
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When should I use the assets as opposed to raw resources in Android?
...lder of Resources (res), Android will
automatically generate an ID for any file located inside it. This
ID is then stored in the R class that will act as a reference to
a file, meaning it can be easily accessed from other Android classes
and methods and even in Android XML files. Using the automatic...