大约有 30,000 项符合查询结果（耗时：0.0471秒） [XML]
Greenlet Vs. Threads
...rence. I achieved this by changing the URLs to be filled as follows:
URLS_base = ['www.google.com', 'www.example.com', 'www.python.org', 'www.yahoo.com', 'www.ubc.ca', 'www.wikipedia.org']
URLS = []
for _ in range(10000):
for url in URLS_base:
URLS.append(url)
I had to drop out the mu...
A weighted version of random.choice
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This should be the new answer based on the performance improvement that @AntonCodes reported.
– Wayne Workman
Jun 22 at 3:56
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Should I implement __ne__ in terms of __eq__ in Python?
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Python, should I implement __ne__() operator based on __eq__?
Short Answer: Don't implement it, but if you must, use ==, not __eq__
In Python 3, != is the negation of == by default, so you are not even required to write a __ne__, and the documentation is no longer op...
.NET NewtonSoft JSON deserialize map to a different property name
...ropertyName, out resolvedName);
return (resolved) ? resolvedName : base.ResolvePropertyName(propertyName);
}
}
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Determining the size of an Android view at runtime
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Based on @mbaird's advice, I found a workable solution by subclassing the ImageView class and overriding onLayout(). I then created an observer interface which my activity implemented and passed a reference to itself to the ...
Double vs. BigDecimal?
...g with prices you want to use BigDecimal. And if you store them in the database you want something similar.
– extraneon
Aug 5 '10 at 11:46
106
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Maximum MIMEType Length when storing type in DB
What are people using as the length of a MIMEType field in their databases? The longest one we've seen so far is 72 bytes:
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What is float in Java?
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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How do I use IValidatableObject?
...in your table (such as the user who created it). It is required in the database but you step in in the SaveChanges in the context to populate it (eliminating the need for developers to remember to set it explicitly). You would, of course, validate before saving. So you don't mark the "creator" colum...
Is there a simple, elegant way to define singletons? [duplicate]
...he Metaclass approach.
class Singleton(type):
def __init__(cls, name, bases, dict):
super(Singleton, cls).__init__(name, bases, dict)
cls.instance = None
def __call__(cls,*args,**kw):
if cls.instance is None:
cls.instance = super(Singleton, cls).__call_...