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Find integer index of rows with NaN in pandas dataframe
...can use to index back into df, e.g.:
df['a'].ix[index[0]]
>>> 1.452354
For the integer index:
df_index = df.index.values.tolist()
[df_index.index(i) for i in index]
>>> [3, 6]
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Linq to SQL how to do “where [column] in (list of values)”
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How can I access an object property named as a variable in php?
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Filtering a list based on a list of booleans
...gt;>> %timeit list(compress(list_a, fil))
100000 loops, best of 3: 2.58 us per loop
>>> %timeit [i for (i, v) in zip(list_a, fil) if v] #winner
100000 loops, best of 3: 1.98 us per loop
>>> list_a = [1, 2, 4, 6]*100
>>> fil = [True, False, True, False]*100
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Mongoose's find method with $or condition does not work properly
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I solved it through googling:
var ObjectId = require('mongoose').Types.ObjectId;
var objId = ne...
How to add multiple columns to a table in Postgres?
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answered Mar 10 '11 at 14:15
Erkan HaspulatErkan Haspulat
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invalid multibyte char (US-ASCII) with Rails and Ruby 1.9
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edited Jul 24 '12 at 1:50
Ry-♦
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How do I get AWS_ACCESS_KEY_ID for Amazon?
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Why does “while(true)” without “Thread.sleep” cause 100% CPU usage on Linux but not on Windows?
... 100% and 4 cores are 400%.
With IRIX mode off, 1 fully utilized core is 25% and 4 cores are 100%.
This means that by default, top on Linux will show an infinite loop as ~100% and Windows will show it as ~25%, and it means exactly the same thing.
You can toggle IRIX mode while top is running wi...
Javascript split regex question
...character (dots are wildcard characters in regular expressions). With "02-25-2010", it would split each time "-2" is encountered, because the dash matches and the dot matches "2".
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