大约有 31,500 项符合查询结果（耗时：0.0600秒） [XML]
What is an efficient way to implement a singleton pattern in Java? [closed]
...An online portion of "Effective Java" says:
"This approach is functionally equivalent to the public field approach, except that it is more concise, provides the serialization machinery for free, and provides an ironclad guarantee against multiple instantiation, even in the face of sophisticated...
SQL-Server: The backup set holds a backup of a database other than the existing
... file on to it"... yes, that solves it. (But why didn't I get this problem all the other times I did the same thing? And didn't we only start doing that pre-create in the first place as a workaround for some other inexplicable error message? :])
– Reg Edit
May ...
Remove duplicate lines without sorting [duplicate]
...e unique lines. This of course could end up being the whole file though if all the lines are unique.
– deltaray
Jul 11 '18 at 17:33
|
show 1...
UICollectionView auto scroll to cell at IndexPath
...ection view user sets the number of image in the array of collection view. All of the cells don't fit on the screen. I have 30 cells and only 6 on the screen.
...
HTML table with 100% width, with vertical scroll inside tbody [duplicate]
...doesn't work properly on IE9 and below.
That's because in a table layout, all elements should follow the same structural properties.
By using display: block; for the <thead> and <tbody> elements, we've broken the table structure.
Redesign layout via JavaScript
One approach is to rede...
Casperjs/PhantomJs vs Selenium
...ness of testing a finance application where the login screen is unintentionally broken and non-functional!
Note that the line between the two gets slightly blurred with the recent WebDriver support in the latest PhantomJS. It is now possible to quickly run the tests first using PhantomJS and then (...
Deleting Objects in JavaScript
...a C++ delete. (And accessing one of them would cause a crash. To make them all turn null would mean having extra work when deleting or extra memory for each object.)
Since Javascript is garbage collected, you don't need to delete objects themselves - they will be removed when there is no way to ref...
How to revert a “git rm -r .”?
... I didn't down vote, but I just tried stash, reset hard, pop and lost all of my recent changes. Maybe I misread the answer.
– Greg M. Krsak
Feb 11 '12 at 20:23
1
...
Make child visible outside an overflow:hidden parent
In CSS the overflow:hidden is set on parent containers in order to allow it to expand with the height of their floating children.
...
How to simulate target=“_blank” in JavaScript
...cking window.open is kinda the point of pop-up blockers! If you make the call in response to a click action it has a better chance of not being blocked.
– William Denniss
Aug 18 '11 at 15:16
...