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Why would you use an ivar?
...s have memorized how to call a hidden accessor dynamically (as long as we know the name…). Meanwhile, most of us have not memorized how to properly access ivars which aren't visible (beyond KVC). The class continuation helps, but it does introduce vulnerabilities.
This workaround's obvious:
if ([o...
What is the fastest way to get the value of π?
...ll depends on what kind of accuracy you are looking for. The fastest π I know of is the one with the digits hard coded. Looking at Pi and Pi[PDF], there are a lot of formulae.
Here is a method that converges quickly — about 14 digits per iteration. PiFast, the current fastest application, uses t...
How do I read from parameters.yml in a controller in symfony2?
...ohr sorry, different version of Symfony2. I've edited my answer - check it now ;)
– Vitalii Zurian
Dec 16 '12 at 16:44
2
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Iterating C++ vector from the end to the beginning
...t purpose. (And yes, incrementing a reverse_interator moves it backward.)
Now, in theory, your method (using begin()/end() & --i) would work, std::vector's iterator being bidirectional, but remember, end() isn't the last element — it's one beyond the last element, so you'd have to decrement f...
Windows threading: _beginthread vs _beginthreadex vs CreateThread C++
...do it's own initialization of the thread. Only C/C++ programmers need to know this as they should now the rules of using their own development environment.
If you use _beginthread you do not need to call CloseHandle as the RTL will do for you. This is why you cannot wait on the handle if you have...
What is the JavaScript convention for no operation?
...s shown here:
setTimeout(function() {
console.log('Start: ', Date.now());
Function.prototype();
console.log('End : ', Date.now());
}, 1000);
Although this is a "true noop" since most browsers seem to do nothing to execute the noop defined this way (and hence save CPU cyc...
Evenly distributing n points on a sphere
... to N-1). If that is all that is confusing you, hopefully you can use that now.
(in other words, k is an array of size N that is defined before the code fragment starts, and which contains a list of the points).
Alternatively, building on the other answer here (and using Python):
> cat ll.py
f...
Should I use 'has_key()' or 'in' on Python dicts?
...
has_key() is now removed in Python 3
– Vadim Kotov
Nov 14 '19 at 15:21
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Use of #pragma in C
... thread 3
Note that the order of output can vary on different machines.
now let me tell you what #pragma did...
it tells the OS to run the some block of code on 4 threads
this is just one of many many applications you can do with the little #pragma
sorry for the outside sample OpenMP
...
How to decorate a class?
...consider a subclass instead of the approach you've outlined. However, not knowing your specific scenario, YMMV :-)
What you're thinking of is a metaclass. The __new__ function in a metaclass is passed the full proposed definition of the class, which it can then rewrite before the class is created. ...