大约有 31,840 项符合查询结果（耗时：0.0351秒） [XML]
Get a specific bit from byte
I have a byte, specifically one byte from a byte array which came in via UDP sent from another device. This byte stores the on/off state of 8 relays in the device.
...
How do you round a float to two decimal places in jruby
... seems the original solution didn't work. That's why updated the answer as one of the suggestions.
def float_of_2_decimal(float_n)
float_n.to_d.round(2, :truncate).to_f
end
Other answers may work, if you want to have rounded numbers of 2 decimal places. But, If you want to have floating point n...
Correct idiom for managing multiple chained resources in try-with-resources block?
... Resource Management )) is nice, short and straightforward when using only one AutoCloseable resource. However, I am not sure what is the correct idiom when I need to declare multiple resources that are dependent on each other, for example a FileWriter and a BufferedWriter that wraps it. Of co...
Web API Routing - api/{controller}/{action}/{id} “dysfunctions” api/{controller}/{id}
... the route engine which action to enter. Otherwise once you have more than one actions in your controller, the engine won't know which one to use and throws "Multiple actions were found that match the request: ...". Then to make it matches your Get method, use an ActionNameAttribute.
So your route...
htaccess Access-Control-Allow-Origin
...
no one says that you also have to have mod_headers enabled, so if still not working, try this:
(following tips works on Ubuntu, don't know about other distributions)
you can check list of loaded modules with
apache2ctl -M
...
SortedList, SortedDictionary and Dictionary
...d analog, but if order of elements is required, e.g. to print them, Sorted one is chosen.
Src: http://people.cs.aau.dk/~normark/oop-csharp/html/notes/collections-note-time-complexity-dictionaries.html
share
|
...
How can I tell if a library was compiled with -g?
... There are also obdjump -W lib and readelf -w lib. The latter one is more configurable - see readelf(1) manpage.
– przemoc
Jan 4 '10 at 14:16
3
...
The differences between .build, .create, and .create! and when should they be used?
...st a wee bit shorter
I think .build is mostly an alias for .new. It works one way in Rails 3 and another way in Rails < 3.x
The most important part, however, is that these methods can be called through an association (has_many, etc.) to automatically link the two models.
...
Row Offset in SQL Server
...
This is one way (SQL2000)
SELECT * FROM
(
SELECT TOP (@pageSize) * FROM
(
SELECT TOP (@pageNumber * @pageSize) *
FROM tableName
ORDER BY columnName ASC
) AS t1
ORDER BY columnName DESC
) AS ...
NSString tokenize in Objective-C
...
Found this at http://borkware.com/quickies/one?topic=NSString (useful link):
NSString *string = @"oop:ack:bork:greeble:ponies";
NSArray *chunks = [string componentsSeparatedByString: @":"];
Hope this helps!
Adam
...