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Why #egg=foo when pip-installing from git repo
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You have to include #egg=Package so pip knows what to expect at that URL. See https://pip.pypa.io/en/stable/reference/pip_install/#vcs-support
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Finding all objects that have a given property inside a collection [duplicate]
...ich defines a check(Cat) method, where that method can be implemented with whatever property-checking you want.
Better yet, make it generic:
public interface Checker<T> {
public boolean check(T obj);
}
public class CatChecker implements Checker<Cat> {
public boolean check(Cat ...
How do I get the object if it exists, or None if it does not exist?
...odel.objects.get(foo='bar')
except SomeModel.DoesNotExist:
go = None
What I did do, is to subclass models.Manager, create a safe_get like the code above and use that manager for my models. That way you can write: SomeModel.objects.safe_get(foo='bar').
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Developing cross platform mobile application [closed]
...the idea that they allow the developers to slash cost and time to market.
What cross-plaform tool are NOT sold on is the benefit they bring to end users.
Benefit to the end user is not a selling point because cross-platform development is seldom a benefit to the end user. The end user does not car...
C++ semantics of `static const` vs `const`
In C++ specifically, what are the semantic differences between for example:
2 Answers
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Lambda function in list comprehensions
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Or map(lambda x: x*x, range(10)), which was probably what the OP meant in the first place.
– Daniel Roseman
May 20 '11 at 18:53
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Undo git reset --hard with uncommitted files in the staging area
...! That saved my @$$ just now. And I learned some git science. Better watch what you add to the index...
– bowsersenior
Jul 28 '12 at 0:31
2
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find -exec a shell function in Linux?
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It's good for /bin/bash but will not work in /bin/sh. What's a pity.
– Роман Коптев
Apr 17 '16 at 18:04
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Getting key with maximum value in dictionary?
...ould be: max(stats.keys(), key=(lambda k: stats[k])) since keys() now does what iterkeys() used to do automatically.
– watsonic
May 5 '15 at 1:58
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How to render a PDF file in Android
... Could you make a more detailed example using PDFView Library? What should we put in pdfName? What do the functions onDraw, onLoad, and onPageChange listener look like? Thanks for your help :)
– Triet Doan
Aug 10 '15 at 15:46
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