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Does pandas iterrows have performance issues?
... b -10 0.1 -1
3 b -10 0.4 -4
In [61]: df.groupby('letter')['calc'].max()
Out[61]:
letter
a 25
b -1
Name: calc, dtype: float64
In [62]: df.groupby('letter')['calc'].idxmax()
Out[62]:
letter
a 1
b 2
Name: calc, dtype: int64
In [63]:...
LINQ's Distinct() on a particular property
...es999: If you're only doing this in a single place, ever, then sure, using GroupBy is simpler. If you need it in more than one place, it's much cleaner (IMO) to encapsulate the intention.
– Jon Skeet
Feb 19 '13 at 17:29
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Git hook to send email notification on repo changes
...answer is combination of Service Hook->Email @ GitHub && Google groups
First login to your google account
Go to Google Groups and at the top click on Create Group
Type in Group Name, Group email address (will copy/paste into GitHub
Service Hook->Email Address), Group description
Afte...
Cannot read configuration file due to insufficient permissions
...ot access and read web.config file.
Make the file accessible to IIS_IUSRS group. Just right click web.config and click properties, under security tab, add IIS_IUSRS.
So what is this IIS_IUSRS thing?
Your web site is like an exe file. Just like any exe file, it should be started by a user and it r...
Include headers when using SELECT INTO OUTFILE?
...Here's how to get column list of table my_table in my_schema.
-- override GROUP_CONCAT limit of 1024 characters to avoid a truncated result
set session group_concat_max_len = 1000000;
select GROUP_CONCAT(CONCAT("'",COLUMN_NAME,"'"))
from INFORMATION_SCHEMA.COLUMNS
WHERE TABLE_NAME = 'my_table'
AND...
SQLiteDatabase.query method
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Where does Limit/offset fall into in this... group by? having? orderby?
– Lion789
Mar 28 '14 at 20:53
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Android getting value from selected radiobutton
I have a piece of code with three RadioButton s within a RadioGroup . I want to set an onCheckedListener that will show the value of the RadioButton in a Toast . However what I have gotten so far is not working. How do I get the value of the RadioButton and display it in a Toast ? This is ...
Vim Regex Capture Groups [bau -> byau : ceu -> cyeu]
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If you don't want to escape the capturing groups with backslashes (this is what you've missed), prepend \v to turn Vim's regular expression engine into very magic mode:
:%s/\v(\w)(\w\w)/\1y\2/g
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What are CN, OU, DC in an LDAP search?
...search criteria.
With your example query
("CN=Dev-India,OU=Distribution Groups,DC=gp,DC=gl,DC=google,DC=com");
In effect the query is:
From the com Domain Component, find the google Domain Component, and then inside it the gl Domain Component and then inside it the gp Domain Component.
In the...
Get top 1 row of each group
I have a table which I want to get the latest entry for each group. Here's the table:
20 Answers
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