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How can I use if/else in a dictionary comprehension?
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@Marcin's answer covers it all, but just in case someone wants to see an actual example, I add two below:
Let's say you have the following dictionary of sets
d = {'key1': {'a', 'b', 'c'}, 'key2': {'foo', 'bar'}, 'key3': {'so', 'sad'}}
and you want ...
What are the “standard unambiguous date” formats for string-to-date conversion in R?
...te (+1). However, the error message "standard unambiguous format" is ironically ambiguous, to which the 23 previous questions attest. A more direct error message like, "format not recognized, see documentation" might improve user experience. Also, I don't believe "01/01/2000" is ISO-8601 ("2000-01-0...
What is the 'dynamic' type in C# 4.0 used for?
... typically have to wave your hand(s) and say some magic words in the right order to get a certain type of spell going. The old API way of talking to COM objects was a lot of that, you needed to jump through a lot of hoops in order to coax the compiler to compile the code for you.
Things break down ...
What's the difference between xsd:include and xsd:import?
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Highly active question. Earn 10 reputation in order to answer this question. The reputation requirement helps protect this question from spam and non-answer activity.
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How to correctly implement custom iterators and const_iterators?
...e, std::iterator with random_access_iterator_tag.These base classes define all type definitions required by STL and do other work.
To avoid code duplication iterator class should be a template class and be parametrized by "value type", "pointer type", "reference type" or all of them (depends on impl...
Length of an integer in Python
...s
Time for mod size: 249.36 ns
Time for fmt size: 336.63 ns
In order of speed (fastest first):
+ mod_size (1.000000x)
+ str_size (1.240835x)
+ math_size (1.321577x)
+ fmt_size (1.350007x)
+ libc_size (4.894290x)
+ exp_size (5.976219x)
(Disclaimer: the function is run on inputs 1 to 1,0...
Where to find Application Loader app in Mac?
I have downloaded applicationloader_1.3.dmg and installed in the destination Macintosh HD.
15 Answers
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ImportError: numpy.core.multiarray failed to import
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I was getting the same error and was able to solve it by updating my numpy installation to 1.8.0:
pip install -U numpy
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Breakpoint on property change
...ols:
Original answer (2012.07):
A console.watch sketch as suggested by @katspaugh:
var console = console || {}; // just in case
console.watch = function(oObj, sProp) {
var sPrivateProp = "$_"+sProp+"_$"; // to minimize the name clash risk
oObj[sPrivateProp] = oObj[sProp];
// overwr...
SVN command to delete all locally missing files
In SVN is there a command I can use to delete all locally missing files in a directory?
12 Answers
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