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Pandas aggregate count distinct
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How about either of:
>>> df
date duration user_id
0 2013-04-01 30 0001
1 2013-04-01 15 0001
2 2013-04-01 20 0002
3 2013-04-02 15 0002
4 2013-04-02 30 0002
>>> df.groupby("date").agg({"duration": np.sum, "user_id...
Is there a way to rename an Xcode 4 scheme?
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edited Mar 18 '11 at 0:59
answered Mar 18 '11 at 0:54
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SQL query for today's date minus two months
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290
If you are using SQL Server try this:
SELECT * FROM MyTable
WHERE MyDate < DATEADD(month, -2...
How can I update my ADT in Eclipse?
... name.
It will list the updates available- which should ideally be adt 20.xx
Eclipse will restart and hopefully everything should work fine for you.
share
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improve this answer
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fork() branches more than expected?
...llykwallyk
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12
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How to select only the first rows for each unique value of a column
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answered Jan 11 '11 at 20:50
gbngbn
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SQL SELECT WHERE field contains words
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mvpmvp
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Can't resize UIView in IB
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edited Jul 6 '09 at 15:50
answered Jul 6 '09 at 15:44
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Assigning a variable NaN in python without numpy
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170
Yes -- use math.nan.
>>> from math import nan
>>> print(nan)
nan
>>>...
Why is this program valid? I was trying to create a syntax error
...bar)
to be written as
new Foo $bar
So that means
Syntax error ! exit 0;
is the same as
error->Syntax(! exit 0);
or
error->Syntax(!exit(0));
Not only is it valid syntax, it doesn't result in a run-time error because the first thing executed is exit(0).
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