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How to get row from R data.frame
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Logical indexing is very R-ish. Try:
x[ x$A ==5 & x$B==4.25 & x$C==4.5 , ]
Or:
subset( x, A ==5 & B==4.25 & C==4.5 )
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Testing if jQueryUI has loaded
...bug a website, and I think that jQueryUI may not have loaded properly. How can I test if jQueryUI has loaded?
5 Answers
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How to change a git submodule to point to a subfolder?
..., I discovered that I actually need only a subset of this project - specifically, the boto folder.
3 Answers
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Android webview & localStorage
I have a problem with a webview which may access to the localStorage by an HTML5 app. The test.html file informs me that local
storage is'nt supported by my browser (ie. the webview ). If you have any suggestion..
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How to change a field name in JSON using Jackson
...ations.
The Jackson documentation for Mixins is outdated, so this example can provide more clarity. In essence: you create mixin class which does the serialization in the way you want. Then register it to the ObjectMapper:
objectMapper.addMixIn(ThirdParty.class, MyMixIn.class);
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How to get the top 10 values in postgresql?
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For this you can use limit
select *
from scores
order by score desc
limit 10
If performance is important (when is it not ;-) look for an index on score.
Starting with version 8.4, you can also use the standard (SQL:2008) fetch first...
Escaping quotes and double quotes
How do I properly escape the quotes in the -param value in the following command line?
3 Answers
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RSpec: how to test if a method was called?
...ng a lot of code that looks like this in order to ensure that a method was called during the execution of a test (for the sake of argument, let's just say I can't really interrogate the state of the object after the call because the operation the method performs is not easy to see the effect of).
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Replace None with NaN in pandas dataframe
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You can use DataFrame.fillna or Series.fillna which will replace the Python object None, not the string 'None'.
import pandas as pd
import numpy as np
For dataframe:
df = df.fillna(value=np.nan)
For column or series:
df.mycol.f...
How do I create a directory from within Emacs?
How exactly can I create a new directory using Emacs? What commands do I use? (If possible, please provide an example)
6 An...