大约有 47,000 项符合查询结果（耗时：0.0919秒） [XML]
Why don't Java Generics support primitive types?
...new ArrayList<ClassA>();
list.add(new ClassA());
ClassA a = list.get(0);
gets turned into (roughly):
List list = new ArrayList();
list.add(new ClassA());
ClassA a = (ClassA)list.get(0);
So, anything that is used as generics has to be convertable to Object (in this example get(0) returns a...
Create table (structure) from existing table
... |
edited Mar 24 '10 at 6:35
answered Mar 24 '10 at 6:23
...
In .NET, which loop runs faster, 'for' or 'foreach'?
...
40 Answers
40
Active
...
What is the difference between i++ and ++i?
...
206
Oddly it looks like the other two answers don't spell it out, and it's definitely worth saying:...
Error: could not find function … in R
...
10 Answers
10
Active
...
Bootstrap 3 Glyphicons are not working
I downloaded bootstrap 3.0 and can't get the glyphicons to work. I get some kind of "E003" error. Any ideas why this is happening? I tried both locally and online and I still get the same problem.
...
Using sphinx with Markdown instead of RST
...
10 Answers
10
Active
...
Getting DOM elements by classname
... |
edited Sep 8 at 0:32
robin eriksson
5655 bronze badges
answered Jun 16 '11 at 2:07
...
What is the easiest way to make a C++ program crash?
...
30 Answers
30
Active
...
Regular Expression to reformat a US phone number in Javascript
...
Assuming you want the format "(123) 456-7890":
function formatPhoneNumber(phoneNumberString) {
var cleaned = ('' + phoneNumberString).replace(/\D/g, '')
var match = cleaned.match(/^(\d{3})(\d{3})(\d{4})$/)
if (match) {
return '(' + match[1] + ') ' + match[2...