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Pandas dataframe get first row of each group
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>>> df.groupby('id').first()
value
id
1 first
2 first
3 first
4 second
5 first
6 first
7 fourth
If you need id as column:
>>> df.groupby('id').first().reset_index()
id value
0 1 first
1 ...
Adding parameter to ng-click function inside ng-repeat doesn't seem to work
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Instead of
<button ng-click="removeTask({{task.id}})">remove</button>
do this:
<button ng-click="removeTask(task.id)">remove</button>
Please see this fiddle:
http://jsfiddle.net/JSWorld/Hp4W7/34/
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ASP.NET: This method cannot be called during the application's pre-start initialization stage
...s run in a weirdo zone where the application is half running and half not, meaning the above method can never be called by any code Migrations would call on.
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Alternate output format for psql
...on Ubuntu. I have a table with columns c1 through cN . The columns are wide enough that selecting all columns causes a row of query results to wrap multiple times. Consequently, the output is hard to read.
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Naming convention for utility classes in Java
...her contains utility functions related to orders, then call them CustomerNameAndAddressUtil and CustomerOrderUtil or some such. I regularly go nuts when I see meaningless subtle differences in names. Like just yesterday I was working on a program that had three fields for freight costs, named "freig...
Get real path from URI, Android KitKat new storage access framework [duplicate]
Before the new gallery access in Android 4.4 (KitKat) I got my real path on the SD card with this method:
9 Answers
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Static Classes In Java
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This answer maybe addresses what the OP meant, but it (currently) does not explain Java static classes, and so does not answer the question at all! This is very bad for people who get here trying to figure out what a static class means in Java.
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How to get first N elements of a list in C#?
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@AlexeyMK - you mean a Comparison<T>, not a predicate (Predicate<T>) - a predicate is used to filter data
– Marc Gravell♦
Nov 26 '08 at 8:40
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MySQL: How to copy rows, but change a few fields?
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INSERT INTO Table
( Event_ID
, col2
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)
SELECT "155"
, col2
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FROM Table WHERE Event_ID = "120"
Here, the col2, ... represent the remaining columns (the ones other than Event_ID) in ...
What is the theoretical maximum number of open TCP connections that a modern Linux box can have
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@Chandranshu - did you mean metabrew.com/article/… ?
– Mikko Rantalainen
Aug 16 '17 at 13:01
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