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Getting the class name from a static method in Java
...tatic context to mean the current Class in Java, that that "class.xxx" was allowed in either instance or static code to mean this class! The problem with this is that MyClass is verbose and redundant, in the context. But then as much as I like Java it does seem to lean towards verbosity.
...
Looping in a spiral
...ition in a squared spiral : Fiddle
function spiral(n) {
// given n an index in the squared spiral
// p the sum of point in inner square
// a the position on the current square
// n = p + a
var r = Math.floor((Math.sqrt(n + 1) - 1) / 2) + 1;
// compute radius : inverse arit...
How to check null objects in jQuery
...em to have enough reputation to vote down the answer...)
Wolf wrote:
Calling length property on undefined
or a null object will cause IE and
webkit browsers to fail!
Instead try this:
// NOTE!! THE FOLLOWING IS WRONG; DO NOT USE! -- EleotleCram
if($("#something") !== null){
// do ...
C++对象布局及多态探索之菱形结构虚继承 - C/C++ - 清泛网 - 专注C/C++及内核技术
...0则从C100和C101多重继承而来。
struct C041
{
C041() : c_(0x01) {}
virtual void foo() { c_ = 0x02; }
char c_;
};
struct C100 : public virtual C041
{
C100() : c_(0x02) {}
char c_;
};
struct C101 : public virtual C041
{
C101() : c_(0x03) {}
...
Get underlined text with Markdown
...
I guess this is because underlined text is hard to read, and that it's usually used for hyperlinks.
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How do I break a string over multiple lines?
...se "..." if you need to split lines in the middle of words or want to literally type linebreaks as \n:
key: "Antidisestab\
lishmentarianism.\n\nGet on it."
YAML is crazy.
Block scalar styles (>, |)
These allow characters such as \ and " without escaping, and add a new line (\n) to the end o...
JavaScript: Passing parameters to a callback function
...pe is intentionally generic, so you can pass any object that has numerical indexes and a length property and it will work.
– Andy E
Aug 11 '10 at 13:25
2
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Can JSON start with “[”?
...e to get back a JSONArray object and then you can use get(i) where i is an index from 0 through the returned JSONArray's size()-1.
import java.io.IOException;
import com.ibm.json.java.JSONArray;
import com.ibm.json.java.JSONObject;
public class BookListTest {
public static void main(String[] ar...
How do I pass extra arguments to a Python decorator?
... it needs to return another function which is the actual decorator:
def my_decorator(param):
def actual_decorator(func):
print("Decorating function {}, with parameter {}".format(func.__name__, param))
return function_wrapper(func) # assume we defined a wrapper somewhere
ret...
iPhone Data Usage Tracking/Monitoring
...
The thing is that pdp_ip0 is one of interfaces, all pdpXXX are WWAN interfaces dedicated to different functions, voicemail, general networking interface.
I read in Apple forum that :
The OS does not keep network statistics on a process-by-process basis. As such, there's n...