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Remove rows with duplicate indices (Pandas DataFrame and TimeSeries)
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what does ~ do in df3 = df3.loc[~df3.index.duplicated(keep='first')] if anyone do not mind answering?
– jsl5703
Feb 27 at 1:38
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How to replace an entire line in a text file by line number
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@DennisWilliamson, I don't even know how that works! What does that trailing 1 do? (Note: I tested it and it does indeed work! I just don't understand how.)
– steveha
Jun 21 '12 at 19:59
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Can overridden methods differ in return type?
...nt is ambiguous i have a class A B is subclass to A C is subclass to B D, what it means Class AB is subclass of AC or A,B are Subclass of A,C Means its confusing
– dinesh kandpal
Mar 2 at 14:49
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Python timedelta in years
... clear "right choice" for year length.
That said, get the difference in whatever units are "natural" (probably seconds) and divide by the ratio between that and years. E.g.
delta_in_days / (365.25)
delta_in_seconds / (365.25*24*60*60)
...or whatever. Stay away from months, since they are eve...
How to check if a stored procedure exists before creating it
...d proc would do, but is not stored on the database side.
That's much like what is called anonymous procedure in PL/SQL.
Update:
Your question title is a little bit confusing.
If you only need to create a procedure if it not exists, then your code is just fine.
Here's what SSMS outputs in the cr...
How to convert SSH keypairs generated using PuTTYgen (Windows) into key-pairs used by ssh-agent and
... a neat utility to convert a linux private key to
Putty format. However, what isn't addressed is that when you save the
public key using puttygen it won't work on a linux server. Windows
puts some data in different areas and adds line breaks.
The Solution: When you get to the public key s...
Copy existing project with a new name in Android Studio
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As free3dom pointed out, here's what should be done:
Create a copy using file manager
Manually edit the app's build.gradle file to change the package name (you can use the file manager).
Manually edit AndroidManifest.xml to change the package name.
Run gr...
Memoization in Haskell?
...an get an unmemoized f by using fix f
This will let you test that f does what you mean for small values of f by calling, for example: fix f 123 = 144
We could memoize this by defining:
f_list :: [Int]
f_list = map (f faster_f) [0..]
faster_f :: Int -> Int
faster_f n = f_list !! n
That perf...
Need to log asp.net webapi 2 request and response body to a database
... suggests, contains the request in parsed form. You simply examine it for whatever you're looking to log and pass it to your logging facility, whichever it may be. This code you can put in the beginning of your action, if you need to do it for just one or a handful.
If you need to do it on all ac...
How to detect Ctrl+V, Ctrl+C using JavaScript?
...rent use cases of e.keyCode and e.which with keydown() and keypress(), and what a mess (especially in firefox)!
– jackocnr
May 25 '10 at 17:49
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