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How is std::function implemented?
...function<int (double)> for the sake of simplicity):
struct callable_base {
virtual int operator()(double d) = 0;
virtual ~callable_base() {}
};
template <typename F>
struct callable : callable_base {
F functor;
callable(F functor) : functor(functor) {}
virtual int operato...
HTTP error 403 in Python 3 Web Scraping
...
Definitely it's blocking because of your use of urllib based on the user agent. This same thing is happening to me with OfferUp. You can create a new class called AppURLopener which overrides the user-agent with Mozilla.
import urllib.request
class AppURLopener(urllib.request....
How to make an enum conform to a protocol in Swift?
... mutating func adjust()
}
enum ExampleEnum : ExampleProtocol {
case Base, Adjusted
var simpleDescription: String {
return self.getDescription()
}
func getDescription() -> String {
switch self {
case .Base:
return "A simple description of en...
Best way to check for “empty or null value”
...SELECT stringexpression
, stringexpression = '' AS base_test
, (stringexpression = '') IS NOT FALSE AS test1
, (stringexpression <> '') IS NOT TRUE AS test2
, coalesce(stringexpression, '') = '' AS coalesce1
, coalesce(stringexpression, ' ...
How do I implement IEnumerable
...
@ja72 What if you're already inheriting from another base class and cannot inherit from Collection<MyObject>?
– Monroe Thomas
Oct 9 '18 at 22:41
...
When to use Tornado, when to use Twisted / Cyclone / GEvent / other [closed]
...which means easy help is available.
"Flask is a microframework for Python based on Werkzeug, Jinja 2 and good intentions". Beware - "microframework" may be misleading. This does not mean that Flask is a half-baked library. This mean the core of flask is very, very simple. Unlike Django, It will not...
How to handle WndProc messages in WPF?
...ected override void OnSourceInitialized(EventArgs e)
{
base.OnSourceInitialized(e);
HwndSource source = PresentationSource.FromVisual(this) as HwndSource;
source.AddHook(WndProc);
}
private IntPtr WndProc(IntPtr hwnd, int msg, IntPtr wPara...
Using WebAPI or MVC to return JSON in ASP.NET
...ontroller instead.
Personally, I use Web API controllers for driving JSON-based RESTful clients, I use MVC controllers for handling basic browser routing and delivery of the SPA.
share
|
improve th...
How to force R to use a specified factor level as reference in a regression?
...d the relevel command which is the best solution if you want to change the base level for all analyses on your data (or are willing to live with changing the data).
If you don't want to change the data (this is a one time change, but in the future you want the default behavior again), then you can ...
Inverse dictionary lookup in Python
...#####################
class _DDChecker(type):
def __new__(cls, name, bases, classdict):
for key, value in classdict.items():
if key not in {'__new__', '__slots__', '_DoubleDict__dict_view'}:
classdict[key] = cls._wrap(value)
return super().__new__(cl...