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Why is “if not someobj:” better than “if someobj == None:” in Python?
... obj in ['', (), [], {}, 0, 0., A(), B(), C(), D(), None]:
... print '%4s: bool(obj) -> %5s, obj == None -> %5s, obj is None -> %5s' % \
... (repr(obj), bool(obj), obj == None, obj is None)
'': bool(obj) -> False, obj == None -> False, obj is None -> False
(): bool(...
How to allow download of .json file with ASP.NET
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edited May 12 '17 at 14:52
answered Nov 16 '11 at 20:56
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How can you disable Git integration in Visual Studio 2013 permanently?
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answered Sep 22 '14 at 14:47
AebsubisAebsubis
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Find when a file was deleted in Git
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answered May 19 '13 at 13:48
vogellavogella
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How to export a Vagrant virtual machine to transfer it
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answered Dec 19 '13 at 11:40
EmylEmyl
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Django: multiple models in one template using forms [closed]
I'm building a support ticket tracking app and have a few models I'd like to create from one page. Tickets belong to a Customer via a ForeignKey. Notes belong to Tickets via a ForeignKey as well. I'd like to have the option of selecting a Customer (that's a whole separate project) OR creating a new ...
When to use virtual destructors?
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answered Jan 20 '09 at 13:04
Luc TourailleLuc Touraille
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git difftool, open all diff files immediately, not in serial
...ir-diff to perform a directory diff.
This feature works well with Meld 3.14.2 for example, and lets you browse all modified files:
git difftool --dir-diff --tool=meld HEAD~ HEAD
This is a handy Bash function:
git-diff-meld() (
git difftool --dir-diff --tool=meld "${1:-HEAD~}" "${2:-HEAD}"
)
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Programmatically get the version number of a DLL
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KrisKris
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boost Composite keys - C/C++ - 清泛网 - 专注C/C++及内核技术
boost Composite keysComposite keysIn relational databases, composite keys depend on two or more fields of a given table The analogous concept in Boost MultiIndex is Composite keys
In relational databases, composite keys depend on two or more fields of a given table. The analogous concept in Boos...