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Get statistics for each group (such as count, mean, etc) using pandas GroupBy?
...t once. This should give you the result you need:
df[['col1', 'col2', 'col3', 'col4']].groupby(['col1', 'col2']).agg(['mean', 'count'])
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How to explain Katana and OWIN in simple words and uses?
...provides, you'd go for IIS but you'd lose on performance.
Now, there is a 3rd option, a Microsoft library named Helios (current codename) which intends to remove System.Web out of the way, and allow you to use IIS on more "cleaner" way, without any unnecessary libraries or modules. Helios is now in...
How to get jQuery dropdown value onchange event
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answered Nov 12 '13 at 7:00
power_scriptorpower_scriptor
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Why does this assert throw a format exception when comparing structures?
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edited Feb 20 '13 at 4:12
BlueRaja - Danny Pflughoeft
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What is P99 latency?
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Chris
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answered Oct 9 '12 at 21:54
Tomasz NurkiewiczToma...
Proper use of the HsOpenSSL API to implement a TLS Server
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Geoff ReedyGeoff Reedy
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Does the order of LINQ functions matter?
...item.CreatedDate)
.Where(item => item.Code > 3);
var result = query.Last();
That requires the whole collection to be sorted and then filtered. If we had a million items, only one of which had a code greater than 3, we'd be wasting a lot of time ordering results which...
Abort makefile if variable not set
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This doesn't seem to be working in make 3.81. It always errors, even if the variable is defined (and can be echoed).
– OrangeDog
Jun 14 '16 at 10:10
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Static implicit operator
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answered Nov 25 '10 at 4:38
Rex MRex M
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Ways to save enums in database
...me :
public enum Suit {
Unknown = 4,
Heart = 1,
Club = 3,
Diamond = 2,
Spade = 0 }
in order to maintain the legacy numerical values stored in the database.
How to sort them in the database
The question comes up: lets say i wanted to order the values. Some people m...