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Is there a read-only generic dictionary available in .NET?
...mers from changing my data? If this were an IList I could simply return it AsReadOnly . Is there something similar I can do with a dictionary?
...
Get the latest record from mongodb collection
...
This is a rehash of the previous answer but it's more likely to work on different mongodb versions.
db.collection.find().limit(1).sort({$natural:-1})
share
|
improve...
How to list imported modules?
...) for modules:
import types
def imports():
for name, val in globals().items():
if isinstance(val, types.ModuleType):
yield val.__name__
This won't return local imports, or non-module imports like from x import y. Note that this returns val.__name__ so you get the original...
vs2008编译boost详细步骤 - 开源 & Github - 清泛网 - 专注C/C++及内核技术
...映射到Python之中；
（9）Pool，内存池管理；
（10）smart_ptr，智能指针。
【二、Boost库的编译】
【Setp1 准备工作】：
（1）Boost 下载可以到官方网站下载：
http://www.boost.org/
（2）安装VS2008 IDE
【Setp2 编译Boost】
1.打开Vi...
Bulk insert with SQLAlchemy ORM
...emy introduced that in version 1.0.0:
Bulk operations - SQLAlchemy docs
With these operations, you can now do bulk inserts or updates!
For instance, you can do:
s = Session()
objects = [
User(name="u1"),
User(name="u2"),
User(name="u3")
]
s.bulk_save_objects(objects)
s.commit()
Her...
When should iteritems() be used instead of items()?
Is it legitimate to use items() instead of iteritems() in all places? Why was iteritems() removed from Python 3? Seems like a terrific and useful method. What's the reasoning behind it?
...
How do I capture SIGINT in Python?
...es and database connections. Every now and then I want to kill the script with a Ctrl + C signal, and I'd like to do some cleanup.
...
Cannot resolve the collation conflict between “SQL_Latin1_General_CP1_CI_AS” and “Latin1_General_CI_
...me')
Collations are needed and used when ordering and comparing strings. It's generally a good idea to have a single, unique collation used throughout your database - don't use different collations within a single table or database - you're only asking for trouble....
Once you've settled for one ...
Import module from subfolder
...to import subfolders as modules. Therefore every subfolder contains a __init__.py . My folder structure is like this:
6 An...
Re-raise exception with a different type and message, preserving existing information
I'm writing a module and want to have a unified exception hierarchy for the exceptions that it can raise (e.g. inheriting from a FooError abstract class for all the foo module's specific exceptions). This allows users of the module to catch those particular exceptions and handle them distinctly,...