大约有 47,000 项符合查询结果(耗时:0.0676秒) [XML]

https://stackoverflow.com/ques... 

How do I get whole and fractional parts from double in JSP/Java?

...imes) prepending a 1 bit. But according to Wikipedia, the word mantissa is now deprecated in favor of "fraction". – Rasmus Faber Dec 5 '08 at 13:32 add a comment ...
https://stackoverflow.com/ques... 

Is REST DELETE really idempotent?

...LETE http://example.com/account/123 then the effect is that account 123 is now deleted from the server. That is the one and only effect, the one and only change to the state of the server. Now lets say you do the same DELETE http://example.com/account/123 request again, the server will respond diff...
https://stackoverflow.com/ques... 

Is it possible to remove inline styles with jQuery?

...ent').removeStyle('display'); and that should do the trick. Update: I now realized that all this is futile. You can simply set it to blank: $('#element').css('display', ''); and it'll automatically be removed for you. Here's a quote from the docs: Setting the value of a style property t...
https://stackoverflow.com/ques... 

How to use 'find' to search for files created on a specific date? [closed]

...s case, the file is 2008-10-01 at midnight touch -t 0810010000 /tmp/t Now we can find all files that are newer or older than the above file (going by file modified date. You can also use -anewer for accessed and -cnewer file status changed). find / -newer /tmp/t find / -not -newer /tmp/t Yo...
https://stackoverflow.com/ques... 

How do I change my Ruby version using RVM?

...at's great, i just put this line in ~/.bashrc, it works. but i also don't know why. – Jack Ma Mar 21 '12 at 6:28 Yeah ...
https://stackoverflow.com/ques... 

Rails 3: Get Random Record

...-----+---------------+---------+---------+-------+------+-------+ we can now use only indexes and the primary key and do the job about 500 times faster! UPDATE: as pointed out by icantbecool in comments the above solution has a flaw if there are deleted records in the table. A workaround in tha...
https://stackoverflow.com/ques... 

Pushing app to heroku problem

... that worked...but now it is giving me this message: $ git push heroku master Counting objects: 1652, done. Delta compression using up to 4 threads. fatal: object 91f5d3ee9e2edcd42e961ed2eb254d5181cbc734 inconsistent object lengt h (476 vs 898...
https://stackoverflow.com/ques... 

How can I scan barcodes on iOS?

... use an external framework or library. The iOS ecosystem with AVFoundation now fully supports scanning almost every code from QR over EAN to UPC. Just have a look at the Tech Note and the AVFoundation programming guide. AVMetadataObjectTypeQRCode is your friend. Here is a nice tutorial which shows...
https://stackoverflow.com/ques... 

Why can't I overload constructors in PHP?

...being able to overload my constructors in PHP, so what I'd really like to know is why . 14 Answers ...
https://stackoverflow.com/ques... 

How to prevent page scrolling when scrolling a DIV element?

...;& e.preventDefault(); }); Inside the event handler, you'll need to know: scrolling direction d = e.originalEvent.deltaY, dir = d < 0 ? 'up' : 'down' because a positive number means scrolling down scroll position scrollTop for top, scrollHeight - scrollTop - offsetHeight for bottom If y...