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Explain the concept of a stack frame in a nutshell
...k with it's stack frame. It means that whenever any recursive function get base condition satisfied and we put a return after base condition, the base condition will not wait to load local variables which are located in the “else” part of program. It will immediately return the current frame fro...
Creation timestamp and last update timestamp with Hibernate and MySQL
... exclusive behaviours to your entities (and you can't extend more than one base class). afaik the only way to obtain the same effect without a base class is though aspectj itd or event listeners see @kieren dixon answer
– gpilotino
Feb 2 '12 at 0:49
...
Use JSTL forEach loop's varStatus as an ID
...ction) for the current
round of iteration.
index getIndex() The zero-based index for the current round of
iteration.
count getCount() The one-based count for the current round of iteration
first isFirst() Flag indicating whether the current round
is the first pass through the it...
Is GET data also encrypted in HTTPS?
...
The domain is not encrypted. This is to support name based virtual hosts (vs. IP based). @MarceloCantos is completely correct that the rest of the URL (i.e. the GET command) is encrypted. This is covered in RFC 4366
– hafichuk
Jul 11 '14 a...
Iterator Loop vs index loop [duplicate]
...nly one out of four distinct ways to iterate over a std::vector:
1) index-based iteration
for (std::size_t i = 0; i != v.size(); ++i) {
// access element as v[i]
// any code including continue, break, return
}
Advantages: familiar to anyone familiar with C-style code, can loop using dif...
Flatten nested dictionaries, compressing keys
...a kind of a "functional", "one-liner" implementation. It is recursive, and based on a conditional expression and a dict comprehension.
def flatten_dict(dd, separator='_', prefix=''):
return { prefix + separator + k if prefix else k : v
for kk, vv in dd.items()
for k, v...
How do I access the request object or any other variable in a form's clean() method?
...
For what it's worth, if you're using Class Based Views, instead of function based views, override get_form_kwargs in your editing view. Example code for a custom CreateView:
from braces.views import LoginRequiredMixin
class MyModelCreateView(LoginRequiredMixin, Crea...
Why are floating point numbers inaccurate?
...ould like to stress how much the representation of a number depends on the base you are working in.
Consider the fraction 2/3
In good-ol' base 10, we typically write it out as something like
0.666...
0.666
0.667
When we look at those representations, we tend to associate each of them with the ...
Why does MYSQL higher LIMIT offset slow the query down?
...next page. In other words, offset often needs to be calculated dynamically based on page and limit, instead of following a continuous pattern.
– Tom
Dec 28 '13 at 14:23
3
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C# HttpWebRequest vs WebRequest
...internally, uses the factory pattern to do the actual creation of objects, based on the Uri you pass in to it. You could actually get back other objects, like a FtpWebRequest or FileWebRequest, depending on the Uri.
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