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Python idiom to return first item or None
I'm sure there's a simpler way of doing this that's just not occurring to me.
23 Answers
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What is the difference between isinstance('aaa', basestring) and isinstance('aaa', str)?
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answered Dec 30 '09 at 8:05
Mark ByersMark Byers
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Quickly create large file on a Windows system
In the same vein as Quickly create a large file on a Linux system ,
I'd like to quickly create a large file on a Windows system. By large I'm thinking 5 GB. The content doesn't matter. A built-in command or short batch file would be preferable, but I'll accept an application if there are no other...
Minimum and maximum date
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new Date('275760-9-13 05:30:00')
– AshTyson
Nov 9 '19 at 12:00
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How to bind inverse boolean properties in WPF?
...ter.Value> gets a 'Binding' is not valid for Setter.Value' compile time error
– mcalex
Mar 8 '19 at 3:48
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Remove all special characters from a string [duplicate]
I am facing an issue with URLs, I want to be able to convert titles that could contain anything and have them stripped of all special characters so they only have letters and numbers and of course I would like to replace spaces with hyphens.
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Matplotlib transparent line plots
I am plotting two similar trajectories in matplotlib and I'd like to plot each of the lines with partial transparency so that the red (plotted second) doesn't obscure the blue.
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IOException: read failed, socket might closed - Bluetooth on Android 4.3
...ur solution of using the fallback has not Solved my problem. Getting below Error. Fallback failed. Cancelling. java.io.IOException: Connection refused Please help.
– Tushar Banne
Feb 17 '16 at 18:48
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How to sort a list of objects based on an attribute of the objects?
...u might want to do the following, then:
try: import operator
except ImportError: keyfun= lambda x: x.count # use a lambda if no operator module
else: keyfun= operator.attrgetter("count") # use operator since it's faster than lambda
ut.sort(key=keyfun, reverse=True) # sort in-place
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Skip callbacks on Factory Girl and Rspec
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Rails 5 - skip_callback raising Argument error when skipping from a FactoryBot factory.
ArgumentError: After commit callback :whatever_callback has not been defined
There was a change in Rails 5 with how skip_callback handles unrecognized callbacks:
ActiveSup...