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Does Python support multithreading? m>Ca m>n it speed up execution time?
...o run threads in parallel.
This only applies to Python code. C extensions m>ca m>n and do release the GIL to allow multiple threads of C code and one Python thread to run across multiple cores. This extends to I/O controlled by the kernel, such as select() m>ca m>lls for socket reads and writes, making Pytho...
nodeValue vs innerHTML and textContent. How to choose?
...nstance.
innerText didn't exist in firefox until FireFox 45 according to m>ca m>niuse but is now supported in all major browsers.
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XPath to select multiple tags
...er is:
/a/b/*[self::c or self::d or self::e]
Do note that this
a/b/*[lom>ca m>l-name()='c' or lom>ca m>l-name()='d' or lom>ca m>l-name()='e']
is both too-long and incorrect. This XPath expression will select nodes like:
OhMy:c
NotWanted:d
QuiteDifferent:e
...
When serving JavaScript files, is it better to use the applim>ca m>tion/javascript or applim>ca m>tion/x-javas
...
text/javascript is obsolete
applim>ca m>tion/x-javascript was experimental while deciding to move to…
applim>ca m>tion/javascript is the current official MIME type for JS
That said, browsers often ignore the content-type sent by the server and pay a lot of attenti...
How do I write good/correct package __init__.py files
...
__all__ is very good - it helps guide import statements without automatim>ca m>lly importing modules
http://docs.python.org/tutorial/modules.html#importing-from-a-package
using __all__ and import * is redundant, only __all__ is needed
I think one of the most powerful reasons to use import * in an __...
Why is arr = [] faster than arr = new Array?
... and disregarding VM-specific optimizations:
First, we go through the lexim>ca m>l analysis phase where we tokenize the code.
By way of example, the following tokens may be produced:
[]: ARRAY_INIT
[1]: ARRAY_INIT (NUMBER)
[1, foo]: ARRAY_INIT (NUMBER, IDENTIFIER)
new Array: NEW, IDENTIFIER
new Array(...
Backbone.View “el” confusion
...ds its events to the model data inside of it.
When you create a view you m>ca m>n manipulate the el in four ways using el:, tagName:, className:, and id:. If none of these are declared el defaults to a div without id or class. It is also not associated with the page at this point. You m>ca m>n change the ta...
Convert blob URL to normal URL
My page generates a URL like this: "blob:http%3A//lom>ca m>lhost%3A8383/568233a1-8b13-48b3-84d5-cm>ca m>045ae384f" How m>ca m>n I convert it to a normal address?
...
What is the AppDelegate for and how do I know when to use it?
...he design approach implied by Andrew's use of the term "heart of your applim>ca m>tion". What I mean by this is that I think you should avoid lumping too many things in a central lom>ca m>tion -- good program design normally involves separating functionality by "area of concern".
A delegate object is an obje...
Default value of function parameter
...rom a different .cpp file, you will be able to see the difference.
Specifim>ca m>lly, suppose:
lib.h
int Add(int a, int b);
lib.cpp
int Add(int a, int b = 3) {
...
}
test.cpp
#include "lib.h"
int main() {
Add(4);
}
The compilation of test.cpp will not see the default parameter declarat...