大约有 14,700 项符合查询结果（耗时：0.0405秒） [XML]
Why does NULL = NULL evaluate to false in SQL server
...g with Nulls?" and "4.5 Avoiding Nulls in SQL" (follow the link:
thanks to Google Books, you can read some pages on-line).
Fabian Pascal on SQL NULLs
From its Practical Issues in Database Management - A Reference
for the Thinking Practitioner (no excerpts on-line, sorry):
10.3 Pratical Implica...
Why doesn't Java offer operator overloading?
...e examples below use a Matrix object, found using the first links found on Google for "Java Matrix object" and "C++ Matrix object":
// C++ YMatrix matrix implementation on CodeProject
// http://www.codeproject.com/KB/architecture/ymatrix.aspx
// A, B, C, D, E, F are Matrix objects;
E = A * (B / 2)...
Git-Based Source Control in the Enterprise: Suggested Tools and Practices?
...
I highly recommend http://code.google.com/p/gerrit/ for enterprise work. It gives you access control plus a built-in review based workflow. It authenticates against any LDAP system. You can hook it up to Hudson with http://wiki.hudson-ci.org/display/HUD...
How can I perform a culture-sensitive “starts-with” operation from the middle of a string?
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Fastest way to list all primes below N
... # Code from: <dickinsm@gmail.com>, Nov 30 2006
# http://groups.google.com/group/comp.lang.python/msg/f1f10ced88c68c2d
if n <= 2:
return []
sieve = range(3, n, 2)
top = len(sieve)
for si in sieve:
if si:
bottom = (si*si - 3) // 2
...
Why don't they teach these things in school? [closed]
Over the summer, I was fortunate enough to get into Google Summer of Code. I learned a lot (probably more than I've learned in the sum of all my university coursework). I'm really wondering why they don't teach a few of the things I learned sooner in school though. To name a few:
...
Separate Back Stack for each tab in Android using Fragments
...ation in previous answer) and I'm not happy with it just like you. I think Google really screwed up with this fragments since this API doesn't cover major use cases. Another issue you may run into is impossibility to embed fragment into another fragment.
– Dmitry Ryadnenko
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What is the combinatory logic equivalent of intuitionistic type theory?
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What is the purpose of the reader monad?
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MVC (Laravel) where to add logic
...on.
Take this example: A short while ago, I developed something like the Google Forms. I started with a CustomFormService and ended up with CustomFormService, CustomFormRender, CustomFieldService, CustomFieldRender, CustomAnswerService and CustomAnswerRender. Why? Because it made sense to me. If y...