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Is inline assembly language slower than native C++ code?
...gh-level language does not expose. Do you want a touch of this complexity? Read this awesome answer here on SO.
Why this?
First of all because compilers can do optimizations that we can't even imagine (see this short list) and they will do them in seconds (when we may need days).
When you code i...
Instance variables vs. class variables in Python
...-common use case is methods. It isn't uncommon to use class attributes for read-only constants that instances need to know (though the only benefit to this is if you also want access from outside the class), but you should certainly be cautious about storing any state in them, which is seldom what y...
What are metaclasses in Python?
...the object class Foo. If it doesn't, it will use
type to create the class.
Read that several times.
When you do:
class Foo(Bar):
pass
Python does the following:
Is there a __metaclass__ attribute in Foo?
If yes, create in-memory a class object (I said a class object, stay with me here), with th...
iPad/iPhone hover problem causes the user to double click a link
...
As of jQuery 1.7, .on is preferred to .live. After reading this answer, I found that changing my code to $('a').on('click touchend', function(e) {...}) works superbly.
– Blazemonger
Feb 16 '12 at 16:17
...
How is the default submit button on an HTML form determined?
...e submit button is unambiguous but I thought I'd include it for people who read the first part and wonder how to make a submit button successful via JS form submission. Of course, the form's onsubmit handlers will still fire this way whereas they wouldn't via form.submit() so that's another kettle ...
Best way to select random rows PostgreSQL
... table and then picks the first 1000 items. Sorting a large table not only reads that table but also involves reading and writing temporary files. The where random() < 0.1 only scans the complete table once.
For large tables this might not what you want as even one complete table scan might take...
google oauth2 redirect_uri with several parameters
...otect against CSRF, I'll try to show a proper method. Rather than passing (read exposing) data it should be kept local. Hydrate it before the request and re-hydrate it after a validated request. "Validated" here means that the state-nonce of request and response match.
You need some kind of temporar...
INNER JOIN ON vs WHERE clause
...JOIN is ANSI syntax which you should use.
It is generally considered more readable, especially when you join lots of tables.
It can also be easily replaced with an OUTER JOIN whenever a need arises.
The WHERE syntax is more relational model oriented.
A result of two tables JOINed is a cartesian ...
load scripts asynchronously
...t('script');
s.type = 'text/javascript';
s.src = src;
s.onload = s.onreadystatechange = function() {
//console.log( this.readyState ); //uncomment this line to see which ready states are called.
if ( !r && (!this.readyState || this.readyState == 'complete') )
{
r = tr...
Why is char[] preferred over String for passwords?
... If a process has access to memory of your application, then that is already a security breach, right?
– Yeti
Sep 1 '15 at 11:26
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