大约有 44,000 项符合查询结果（耗时：0.0760秒） [XML]
How can I convert comma separated string into a List
... yes as the Select extension in this case returns IEnumerable<Int32> and it is not list. However list has a constructor accepting another collection as source.
– Oybek
Feb 15 '12 at 21:07
...
Check a collection size with JSTL
...r Facelets:
<... xmlns:fn="http://java.sun.com/jsp/jstl/functions">
And use like this in your page:
<p>The length of the companies collection is: ${fn:length(companies)}</p>
So to test with length of a collection:
<c:if test="${fn:length(companies) gt 0}">
</c:if>
A...
Regular expression for a string containing one word but not another
I'm setting up some goals in Google Analytics and could use a little regex help.
4 Answers
...
Write string to output stream
...
Streams (InputStream and OutputStream) transfer binary data. If you want to write a string to a stream, you must first convert it to bytes, or in other words encode it. You can do that manually (as you suggest) using the String.getBytes(Charset) ...
What is this weird colon-member (“ : ”) syntax in the constructor?
...mber bar to a value num.
What is the difference between Initializing and Assignment inside a constructor?
Member Initialization:
Foo(int num): bar(num) {};
Member Assignment:
Foo(int num)
{
bar = num;
}
There is a significant difference between Initializing a member using Member in...
What is the pythonic way to unpack tuples? [duplicate]
...41, 0)
dt = datetime.datetime(*t[0:7])
This is called unpacking a tuple, and can be used for other iterables (such as lists) too. Here's another example (from the Python tutorial):
>>> range(3, 6) # normal call with separate arguments
[3, 4, 5]
>>> args = [3, 6]
>...
FFmpeg on Android
I have got FFmpeg compiled (libffmpeg.so) on Android. Now I have to build either an application like RockPlayer or use existing Android multimedia framework to invoke FFmpeg.
...
What is Dispatcher Servlet in Spring?
...
The job of the DispatcherServlet is to take an incoming URI and find the right combination of handlers (generally methods on Controller classes) and views (generally JSPs) that combine to form the page or resource that's supposed to be found at that location.
I might have
a file /W...
Print Current Mercurial Revision Hash?
...
No prob. hg help revisions and hg help revsets has some crazy powerful shortcuts like that.
– Ry4an Brase
Jun 13 '12 at 20:47
...
What is the easiest way to push an element to the beginning of the array?
...
Prepends objects to the front of self, moving other elements upwards.
And in use:
irb>> a = [ 0, 1, 2]
=> [0, 1, 2]
irb>> a.unshift('x')
=> ["x", 0, 1, 2]
irb>> a.inspect
=> "["x", 0, 1, 2]"
...