大约有 41,000 项符合查询结果（耗时：0.0664秒） [XML]
is there a css hack for safari only NOT chrome?
im trying to find a css hack for just safari NOT chrome, i know these are both webkit browsers but im having problems with div alignments in chrome and safari, each displays differently.
...
What's the point of NSAssert, actually?
... assertion fails, the app crashes. Is that the reason why to use NSAssert? Or what else is the benefit of it? And is it right to put an NSAssert just above any assumption I make in code, like a function that should never receive a -1 as param but may a -0.9 or -1.1?
...
Get underlying NSData from UIImage
I can create UIImage from NSData using [UIImage imageWithData:] or [UIImage initWithData:] methods.
6 Answers
...
What are the differences between a HashMap and a Hashtable in Java?
...htable is synchronized, whereas HashMap is not. This makes HashMap better for non-threaded applications, as unsynchronized Objects typically perform better than synchronized ones.
Hashtable does not allow null keys or values. HashMap allows one null key and any number of null values.
One of HashMap...
RESTful Authentication
What does RESTful Authentication mean and how does it work? I can't find a good overview on Google. My only understanding is that you pass the session key (remeberal) in the URL, but this could be horribly wrong.
...
Java logical operator short-circuiting
Which set is short-circuiting, and what exactly does it mean that the complex conditional expression is short-circuiting?
9...
Awk学习笔记 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...ile var=value file(s)
2.2. 命令选项
-F fs or --field-separator fs
指定输入文件折分隔符，fs是一个字符串或者是一个正则表达式，如-F:。
-v var=value or --asign var=value
赋值一个用户定义变量。
-f scri...
What is meant by the term “hook” in programming?
...rred from the conversation that a hook is a type of function. I searched for a definition but was unable to find a good answer. Would someone be able to give me an idea of what this term generally means and perhaps a small example to illustrate the definition?
...
Where to use EJB 3.1 and CDI?
...unds like you are using @WebService and @Schedule, which are good reasons for adding EJB to the mix.
There's a lot of confusion out there, so here is some general information on EJB and CDI as they relate to each together.
EJB >= CDI
Note that EJBs are CDI beans and therefore have all the bene...
Why is NaN not equal to NaN? [duplicate]
...
The accepted answer is 100% without question WRONG. Not halfway wrong or even slightly wrong. I fear this issue is going to confuse and mislead programmers for a long time to come when this question pops up in searches.
NaN is designed to propagate through all calculations, infecting them like...