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C++ auto keyword. Why is it magic?
...t's C base.
#include <iostream>
#include <string>
#include <array>
using namespace std;
void print(auto arg) {
cout<<arg<<" ";
}
int main()
{
string f = "String";//tok assigned
int x = 998;
double a = 4.785;
string b = "C++ Auto !";
//In an opt-code ASCI...
How many socket connections can a web server handle?
...eed 64GB of RAM. If each client needs to read a file, the disk or storage array access load becomes much larger than those devices can handle. If a server needs to fork one process per connection then the OS will spend the majority of its time context switching or starving processes for CPU time.
...
To ARC or not to ARC? What are the pros and cons? [closed]
...tions in dealing with anything that treats an id as a void*. Things like C-arrays of id can take a little more thinking about to do correctly. Fancy handling of ObjC va_args can also cause trouble. Most things involving math on an ObjC pointer is trickier. You shouldn't have much of this in any case...
Requirejs domReady plugin vs Jquery $(document).ready()?
...t is both a plugin and a module. If you include it in the the requirements array w/ a trailing ! your module won't execute until it's "safe" to interact w/ the DOM:
define(['domReady!'], function () {
console.info('The DOM is ready before I happen');
});
Note that loading and executing are di...
Does Haskell require a garbage collector?
...ate dynamic data structures in (say) Fortran by representing them in a big array. It is HORRIBLE ... and not relevant to this discussion.)
The language can provide an explicit free or dispose mechanism. But this relies on the programmer to get it right. Any mistake in the storage management can r...
kernel stack and user space stack
...y variables on the stack, including
huge structures and thousand-element arrays.
This behavior is legal because user-space has
a large stack that can dynamically grow.
The kernel stack is neither large nor dynamic; it is small and fixed in size.
The exact size of the kernel’s stack varie...
What is the motivation for bringing Symbols to ES6?
...r I still don't know why would I use object with symbol keys instead of an array. If I have multiple person like {"peter":"pan"} {"john":"doe"} it feels bad for me to put them in one object. For the same reason as I don't make classes with duplicated properties like personFirstName1, personFirstName...
Is it possible to specify your own distance function using scikit-learn K-Means Clustering?
...w, class Kmeans below.
"""
if not issparse(X):
X = np.asanyarray(X) # ?
centres = centres.todense() if issparse(centres) \
else centres.copy()
N, dim = X.shape
k, cdim = centres.shape
if dim != cdim:
raise ValueError( "kmeans: X %s and centres %s must...
Why should I use the keyword “final” on a method parameter in Java?
...ping programmers to avoid dumb mistakes such as reading past the end of an array, Java should have been designed to automatically enforce all parameter/argument variables as 'final'. In other words, Arguments should not be variables. But hindsight is 20/20 vision, and the Java designers had their ha...
Why shouldn't I use PyPy over CPython if PyPy is 6.3 times faster?
...umerics. For numerics, Python is just used to ferry around pointers to big arrays. So PyPy being "as fast as C" means "your pointers+metadata get moved around as fast as C". Not a big deal. Then why bother with Python at all? Go look at the function signatures in cblas and lapacke.
...