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Comparing two dataframes and getting the differences
...This approach, df1 != df2, works only for dataframes with identical rows and columns. In fact, all dataframes axes are compared with _indexed_same method, and exception is raised if differences found, even in columns/indices order.
If I got you right, you want not to find changes, but symmetric d...
Ignore python multiple return value
...= func()[0] to return the first value, x = func()[1] to return the second, and so on.
If you want to get multiple values at a time, use something like x, y = func()[2:4].
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Git format-patch to be svn compatible?
...ch with git diff --no-prefix master..branch > somefile.diff, the master and branch part are optional, depends how you want to get your diffs.
Send it wherever and apply with patch -p0 < somefile.diff.
It always seems to work fine for me and seems to be the simplest method that I've come acr...
Rails - How to use a Helper Inside a Controller
...
Note: This was written and accepted back in the Rails 2 days; nowadays grosser's answer is the way to go.
Option 1: Probably the simplest way is to include your helper module in your controller:
class MyController < ApplicationController
inc...
How to update Identity Column in SQL Server?
I have SQL Server database and I want to change the identity column because it started
with a big number 10010 and it's related with another table, now I have 200 records and I want to fix this issue before the records increases.
...
What command means “do nothing” in a conditional in Bash?
...
The no-op command in shell is : (colon).
if [ "$a" -ge 10 ]
then
:
elif [ "$a" -le 5 ]
then
echo "1"
else
echo "2"
fi
From the bash manual:
: (a colon)
Do nothing beyond expanding arguments and performing redirections....
iTextSharp - Sending in-memory pdf in an email attachment
...what I am doing wrong in my code. I run the code above from a ASP.Net page and get "Cannot Access a Closed Stream".
5 Answ...
How is mime type of an uploaded file determined by browser?
...me
Chrome (version 38 as of writing) has 3 ways to determine the MIME type and does so in a certain order. The snippet below is from file src/net/base/mime_util.cc, method MimeUtil::GetMimeTypeFromExtensionHelper.
// We implement the same algorithm as Mozilla for mapping a file extension to
// a mim...
How to redirect stderr and stdout to different files in the same line in script?
...
Just add them in one line command 2>> error 1>> output
However, note that >> is for appending if the file already has data. Whereas, > will overwrite any existing data in the file.
So, command 2> error 1> output if you do not...
ASP.NET MVC RequireHttps in Production Only
... forced to write the function declaration twice - once with the attribute, and once without. It does work, though, if you don't mind the ugliness.
#If Not Debug Then
<RequireHttps()> _
Function SomeAction() As ActionResult
#Else
Function SomeAction() As ActionResult
#End If
...