大约有 2,945 项符合查询结果（耗时：0.0317秒） [XML]
Position of least significant bit that is set
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Bit Twiddling Hacks offers an excellent collection of, er, bit twiddling hacks, with performance/optimisation discussion attached. My favourite solution for your problem (from that site) is «multiply and lookup»:
unsigned int v; // find the number of ...
What are the best practices for using a GUID as a primary key, specifically regarding performance?
... 106 MB - and that's just on a single table!
Some more food for thought - excellent stuff by Kimberly Tripp - read it, read it again, digest it! It's the SQL Server indexing gospel, really.
GUIDs as PRIMARY KEY and/or clustered key
The clustered index debate continues
Ever-increasing clustering k...
How to set the prototype of a JavaScript object that has already been instantiated?
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Excellent breakdown! While it's not quite the same thing as a mutable prototype, ECMA Harmony will probably implement proxies, which let you shim additional functionality onto particular objects using a catchall pattern.
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List of all index & index columns in SQL Server DB
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Produces a comprehensive result set that is easily exportable to Notepad/Excel for slicing and dicing and includes
Table Name
Index Name
Index Description
Indexed Columns - In order
Included Columns - In order
SELECT '[' + s.NAME + '].[' + o.NAME + ']' AS 'table_name'
,+ i...
How do you keep user.config settings across different assembly versions in .net?
...g up with your current settings.
Full credit to jsharrison for posting an excellent article about this issue. You can read more details about it there.
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How do you do Impersonation in .NET?
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That link from the Dutch programmer's blog was excellent. Much more intuitive approach to impersonation than the other techniques presented.
– code4life
Aug 22 '16 at 23:26
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What is unit testing? [closed]
... superiority over your non-testing colleagues :)
This presentation is an excellent introduction to all the yummy goodness testing entails.
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PHP best way to MD5 multi-dimensional array?
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Aside from Brock's excellent answer (+1), any decent hashing library allows you to update the hash in increments, so you should be able to update with each string sequentially, instead having to build up one giant string.
See: hash_update
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ctypes - Beginner
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The answer by Chinmay Kanchi is excellent but I wanted an example of a function which passes and returns a variables/arrays to a C++ code. I though I'd include it here in case it is useful to others.
Passing and returning an integer
The C++ code for a funct...
C state-machine design [closed]
...that needs to be generated to support it. Using this approach gives you an excellent separation of concerns, and you keep the structure of your state machine 'visible'. The auto-generated code goes into modules that you don't need to touch, so that you can go back and fiddle with the state machine's...