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Factors in R: more than an annoyance?
...ns that are factors using gdata
require(gdata)
drop.levels(dataframe)
I know that it is straightforward to recode levels of a factor and to rejig the labels and there are also wonderful ways to reorder the levels. My brain just cannot remember them and I have to relearn it every time I use it. Rec...
How to merge dictionaries of dictionaries?
...appropriate here.
d3 = d1.copy()
d3.update(d2)
return d3
And now
from functools import reduce
reduce(rec_merge, (d1, d2, d3, d4))
returns
{'a': {1: 'quux', 2: 'bar'}, 'b': {3: 'baz'}}
Application to the original question:
I've had to remove the curly braces around the letters an...
Error: The 'brew link' step did not complete successfully
...
The homebrew package for node.js now includes npm again, so this happened to me when I missed the homebrew package's message about removing the standalone version first.
Assuming, like me, you've already broken node/npm by attempting the upgrade before kno...
What is a “surrogate pair” in Java?
... this range (0x10000 to 0x10FFFF). This is done using pairs of code units known as surrogates.
The surrogate code units are in two ranges known as "high surrogates" and "low surrogates", depending on whether they are allowed at the start or end of the two-code-unit sequence.
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best way to add license section to iOS settings bundle
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I think I've now managed to solve all the problems I was running into.
It seems to be best to use group element titles to hold the licenses (this is what Apple do in the iWork apps). There is however a limit on the length of these (and ...
Java Reflection Performance
...
so you've just killed the optimiser, so now both versions are slow. Reflection is, therefore, still damn slow.
– gbjbaanb
Feb 13 '09 at 23:39
14
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Node.js or Erlang
...n under Cygwin for Windows support.
Looks good though.
Edit
Node.js now has native support for Windows.
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IOS7 : UIScrollView offset in UINavigationController
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In iOS 11 automaticallyAdjustsScrollViewInsets is deprecated
You should now use:
self.tableView.contentInsetAdjustmentBehavior = .never
I also encourage you to check this question and its answer to get a better understanding of those properties
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Why must wait() always be in synchronized block
We all know that in order to invoke Object.wait() , this call must be placed in synchronized block, otherwise an IllegalMonitorStateException is thrown. But what's the reason for making this restriction? I know that wait() releases the monitor, but why do we need to explicitly acquire the mon...
vertical alignment of text element in SVG
... @SeMeKh: Hmm incidentally, it worked for me on Chromium, but now I just verified that the same doesn't not work on Firefox. So it appears this property is not supported consistently across browsers as of now.
– R. Hill
Apr 12 '13 at 18:01
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