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Surrogate vs. natural/business keys [closed]
...er question is what to use for a logical primary key. They are both essentially just non-null unique index constraints.
– dkretz
Feb 12 '09 at 22:11
1
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How do I catch a numpy warning like it's an exception (not just for testing)?
...ng: divide by zero encountered in divide
array([0])
>>> np.seterr(all='print')
{'over': 'warn', 'divide': 'warn', 'invalid': 'warn', 'under': 'ignore'}
>>> np.array([1])/0 #'print' mode
Warning: divide by zero encountered in divide
array([0])
This means that the warning you see...
In log4j, does checking isDebugEnabled before logging improve performance?
...using Log4J in my application for logging. Previously I was using debug call like:
16 Answers
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How can I tell how many objects I've stored in an S3 bucket?
...
There is no way, unless you
list them all in batches of 1000 (which can be slow and suck bandwidth - amazon seems to never compress the XML responses), or
log into your account on S3, and go Account - Usage. It seems the billing dept knows exactly how many object...
How do I stop Notepad++ from showing autocomplete for all words in the file
...ontent-policy\"\u003e(content policy)\u003c/a\u003e",
allowUrls: true
},
onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true,enableSnippets:true
});
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Should we pass a shared_ptr by reference or by value?
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mloskotmloskot
32.1k99 gold badges9494 silver badges115115 bronze badges
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How to remove trailing whitespaces with sed?
...
hm. its also buggy in the sense that it will remove all trailing "t"s :)
– Good Person
Aug 1 '14 at 2:30
2
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How to import existing Git repository into another?
I have a Git repository in a folder called XXX , and I have second Git repository called YYY .
15 Answers
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Python dictionary from an object's fields
...a dictionary from an arbitrary object, it's sufficient to use __dict__. Usually, you'll declare your methods at class level and your attributes at instance level, so __dict__ should be fine. For example:
>>> class A(object):
... def __init__(self):
... self.b = 1
... self.c = 2
....
Check whether an array is a subset of another
... @Bul Ikana Working of this code is simple, extension method internally calls the Equals and GetHashCode of the overridden object class methods if there's no IEqualityComparer provided for the job.
– Mrinal Kamboj
Oct 20 '15 at 7:21
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