大约有 45,000 项符合查询结果（耗时：0.0772秒） [XML]
How to swap two variables in JavaScript
...
27 Answers
27
Active
...
How can I find the last element in a List?
...
212
If you just want to access the last item in the list you can do
if(integerList.Count>0)
{
...
Best way to test if a row exists in a MySQL table
...
12 Answers
12
Active
...
Java time-based map/cache with expiring keys [closed]
...
329
Yes. Google Collections, or Guava as it is named now has something called MapMaker which can do...
How to access object attribute given string corresponding to name of that attribute
...
297
There are built-in functions called getattr and setattr
getattr(object, attrname)
setattr(obj...
What are the differences between PMD and FindBugs?
...may return null, reference comparison of Boolean values, impossible cast, 32bit int shifted by an amount not in the range of 0-31, a collection which contains itself, equals method always returns true, an infinite loop, etc.
Usually each of them finds a different set of problems. Use both. These to...
Creating PHP class instance with a string
...
492
Yes, you can!
$str = 'One';
$class = 'Class'.$str;
$object = new $class();
When using namespa...
Can someone explain collection_select to me in clear, simple terms?
...
2 Answers
2
Active
...
How can I extract audio from video with ffmpeg?
...
12 Answers
12
Active
...
Is there a pattern for initializing objects created via a DI container
...
276
Any place where you need a run-time value to construct a particular dependency, Abstract Facto...