大约有 40,000 项符合查询结果（耗时：0.0436秒） [XML]
WiX tricks and tips
...ion in the registry, enabling upgrades to find the correct location. For example, if a user sets custom install directory.
<Property Id="INSTALLLOCATION">
<RegistrySearch Id="RegistrySearch" Type="raw" Root="HKLM" Win64="$(var.Win64)"
Key="Software\Company\Product" Name...
How can I apply a function to every row/column of a matrix in MATLAB?
You can apply a function to every item in a vector by saying, for example, v + 1 , or you can use the function arrayfun . How can I do it for every row/column of a matrix without using a for loop?
...
John Carmack's Unusual Fast Inverse Square Root (Quake III)
...
float InvSqrt(float x)
{
float xhalf = 0.5f * x;
int i = *(int*)&x; // get bits for floating value
i = 0x5f375a86 - (i >> 1); // gives initial guess y0
x = *(float*)&i; // convert bits back to float
x = x * (1.5f - xhalf * x * x); ...
How to get function parameter names/values dynamically?
...ENT_NAMES);
if(result === null)
result = [];
return result;
}
Example usage:
getParamNames(getParamNames) // returns ['func']
getParamNames(function (a,b,c,d){}) // returns ['a','b','c','d']
getParamNames(function (a,/*b,c,*/d){}) // returns ['a','d']
getParamNames(function (){}) // retu...
How do I use Java to read from a file that is actively being written to?
...
Could not get the example to work using FileChannel.read(ByteBuffer) because it isn't a blocking read. Did however get the code below to work:
boolean running = true;
BufferedInputStream reader = new BufferedInputStream(new FileInputStream( "ou...
Why should the copy constructor accept its parameter by reference in C++?
...a pointer to an object then the compiler's code would have to be object o(&other_object). So in essence you write a constructor that satisfies what the compiler and users expect.
– wilhelmtell
Apr 21 '10 at 23:46
...
Activate a virtualenv via fabric as deploy user
...ce' call you mentioned, if not):
def task():
workon = 'workon myvenv && '
run(workon + 'git pull')
run(workon + 'do other stuff, etc')
Since version 1.0, Fabric has a prefix context manager which uses this technique so you can for example:
def task():
with prefix('workon ...
How to store arrays in MySQL?
...
Use database field type BLOB to store arrays.
Ref: http://us.php.net/manual/en/function.serialize.php
Return Values
Returns a string containing a byte-stream representation of value that
can be stored anywhere.
Note that this is a binary string which may include null bytes, and
needs ...
When should I use a trailing slash in my URL?
...wenda, .htaccess can do all sorts of magic ;) your CSS might actually be a php file!
– rmorse
Apr 16 '13 at 15:07
4
...
Why is it slower to iterate over a small string than a small list?
...ifdef Py_LIMITED_API
#define PyType_HasFeature(t,f) ((PyType_GetFlags(t) & (f)) != 0)
#else
#define PyType_HasFeature(t,f) (((t)->tp_flags & (f)) != 0)
#endif
So this is normally really trivial (two indirections and a couple of boolean checks) unless Py_LIMITED_API is on, in which cas...