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Get the client's IP address in socket.io
...ket.handshake.headers["x-real-port"];
Note that the header is internally converted to lower case.
If you are connecting the node server directly to the client,
var ip = socket.conn.remoteAddress;
works with socket.io version 1.4.6 for me.
...
CDC:DrawText 多行显示文本（文本自动换行） - C++ UI - 清泛IT社区，为创新赋能！
... | DT_TOP | DT_WORDBREAK | DT_EDITCONTROL, m_pfSongTi);
函数原型：
int DrawText(
HDC hDC, // handle to DC
LPCTSTR lpString, // text to draw
int nCount, // text length
LPRE...
Differences between fork and exec
...eplace the entire current process with a new program. It loads the program into the current process space and runs it from the entry point.
So, fork and exec are often used in sequence to get a new program running as a child of a current process. Shells typically do this whenever you try to run a p...
Force LF eol in git repo and working copy
...t be altered, files detected as being text files will see the line endings converted on the fly.
However, as you know the content of your repository, you may give Git a hand and help him detect text files from binary files.
Provided you work on a C based image processing project, replace the conte...
What is polymorphism, what is it for, and how is it used?
...orm.
So polymorphism is the ability (in programming) to present the same interface for differing underlying forms (data types).
For example, in many languages, integers and floats are implicitly polymorphic since you can add, subtract, multiply and so on, irrespective of the fact that the types a...
Android: create a popup that has multiple selection options
...y to an AlertDialog.Builder with the method setItems(CharSequence[], DialogInterface.OnClickListener).
An example:
String[] colors = {"red", "green", "blue", "black"};
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setTitle("Pick a color");
builder.setItems(colors, new Dialo...
How do I deep copy a DateTime object?
...
$date1 = new DateTime();
$date2 = new DateTime();
$date2->add(new DateInterval('P3Y'));
Update:
If you want to copy rather than reference an existing DT object, use clone, not =.
$a = clone $b;
share
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...
error: use of deleted function
..., which would not be initialized by the default ctor.
class X {
const int x;
};
Since X::x is const, it must be initialized -- but a default ctor wouldn't normally initialize it (because it's a POD type). Therefore, to get a default ctor, you need to define one yourself (and it must initializ...
C++应用程序添加VBScript和JavaScript支持 - C/C++ - 清泛网 - 专注IT技能提升
...riting a Script function
Let's say we want to create a simple function to convert temperature from Fahrenheit to Celsius.
In VBScript write:
Function Celsius(fDegrees)
Celsius = (fDegrees - 32) * 5 / 9
End Function
or in JScript write:
function Celsius(fDegres)
{
return (fDe...
C++应用程序添加VBScript和JavaScript支持 - C/C++ - 清泛网 - 专注IT技能提升
...riting a Script function
Let's say we want to create a simple function to convert temperature from Fahrenheit to Celsius.
In VBScript write:
Function Celsius(fDegrees)
Celsius = (fDegrees - 32) * 5 / 9
End Function
or in JScript write:
function Celsius(fDegres)
{
return (fDe...