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Reading CSV files using C#
...sualBasic but it works in C# just as well - remember that at the end it is all just IL)
use the Microsoft.VisualBasic.FileIO.TextFieldParser class to parse CSV file
Here is the sample code:
using (TextFieldParser parser = new TextFieldParser(@"c:\temp\test.csv"))
{
parser.TextFieldType = Fiel...
Convert column classes in data.table
...hat is the idiomatic way of doing this for a subset of columns (instead of all of them)? I've defined a character vector convcols of columns. dt[,lapply(.SD,as.numeric),.SDcols=convcols] is almost instant while dt[,convcols:=lapply(.SD,as.numeric),.SDcols=convcols] almost freezes up R, so I'm guessi...
Autoincrement VersionCode with gradle extra properties
...se build", that should be possible, though I don't know the details. Personally, since there are ~2 billion version codes available, I'm assuming I won't run out. :-)
– CommonsWare
Feb 27 '14 at 20:47
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How to check if two arrays are equal with JavaScript? [duplicate]
...e
// the array, you should sort both arrays here.
// Please note that calling sort on an array will modify that array.
// you might want to clone your array first.
for (var i = 0; i < a.length; ++i) {
if (a[i] !== b[i]) return false;
}
return true;
}
...
How do I remove a MySQL database?
...e users; i.e., force MySQL to read the user's privileges again.
-- DELETE ALL RECIPE
drop schema <database_name>;
-- Same as `drop database <database_name>`
drop user <a_user_name>;
-- You may need to add a hostname e.g `drop user bob@localhost`
FLUSH PRIVILEGES;
Good luck!
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Why is parenthesis in print voluntary in Python 2.7?
...
In Python 2.x print is actually a special statement and not a function*.
This is also why it can't be used like: lambda x: print x
Note that (expr) does not create a Tuple (it results in expr), but , does. This likely results in the confusion between...
How do I force a DIV block to extend to the bottom of a page even if it has no content?
In the markup shown below, I'm trying to get the content div to stretch all the way to the bottom of the page but it's only stretching if there's content to display. The reason I want to do this is so the vertical border still appears down the page even if there isn't any content to display.
...
Stretch and scale CSS background
... background-size: cover;
}
cover means stretching the image either vertically or horizontally so it never tiles/repeats.
That would work for Safari 3 (or later), Chrome, Opera 10+, Firefox 3.6+, and Internet Explorer 9 (or later).
For it to work with lower verions of Internet Explorer, try th...
Ignore fields from Java object dynamically while sending as JSON from Spring MVC
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Can I do it dynamically? Not in POJO? Can I do it in my Controller class?
– iCode
Apr 16 '14 at 6:36
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What's the difference between Perl's backticks, system, and exec?
...It never returns true, because if the command is found it never returns at all.
There is also no point in returning STDOUT, STDERR or exit status of the command.
You can find documentation about it in perlfunc,
because it is a function.
system
executes a command and your Perl script is con...