大约有 42,000 项符合查询结果（耗时：0.0251秒） [XML]
Immutability of Strings in Java
...
str is not an object, it's a reference to an object. "Hello" and "Help!" are two distinct String objects. Thus, str points to a string. You can change what it points to, but not that which it points at.
Take this code, for example:
String s1 = "Hello";
String s2 = s1;
// s1 and s2 now ...
A generic list of anonymous class
...r I got Error 1 'System.Array' does not contain a definition for 'ToList' and no extension method 'ToList' accepting a first argument of type 'System.Array' could be found (are you missing a using directive or an assembly reference?)
– DHornpout
Mar 4 '09 at 2...
What's the difference between deque and list STL containers?
...e is very much like a vector: like vector, it is a sequence that supports random access to elements, constant time insertion and removal of elements at the end of the sequence, and linear time insertion and removal of elements in the middle.
The main way in which deque differs from vector is that de...
How do I download a package from apt-get without installing it? [closed]
I have a computer without a NIC , and I want to install some programs in it via USB memory, but how can I download a program from apt-get without installing it?
...
How do I install the yaml package for Python?
... YAML. I attempted to install it on a new server using pip install yaml and it returns the following:
11 Answers
...
Strange out of memory issue while loading an image to a Bitmap object
...n returns from the activity back to the listview activity to the result handler to relaunch my new activity which is nothing more than an image widget.
...
Greedy vs. Reluctant vs. Possessive Quantifiers
I found this excellent tutorial on regular expressions and while I intuitively understand what "greedy", "reluctant" and "possessive" quantifiers do, there seems to be a serious hole in my understanding.
...
How to remove unused imports in Intellij IDEA on commit?
...r "Add unambiguous imports on the fly" is for :) You can disable the first and only enable the unambiguous setting.
– matt b
Sep 25 '12 at 14:44
...
What does the JSLint error 'body of a for in should be wrapped in an if statement' mean?
...sole.log([0, 5, 0, 3, 0, 1, 0].filter_0());
//prints [5,3,1]
This is a standard way to extend objects and add new methods. Lots of libraries do this.
However, let's look at how for in works now:
var listeners = ["a", "b", "c"];
for (o in listeners) {
console.log(o);
}
//prints:
// 0
// 1
//...
YYYY-MM-DD format date in shell script
... can be viewed from the date man pages (for external non-bash specific command):
man date
share
|
improve this answer
|
follow
|
...