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What are the differences between type() and isinstance()?
...caters for inheritance (an instance of a derived class is an instance of a base class, too), while checking for equality of type does not (it demands identity of types and rejects instances of subtypes, AKA subclasses).
Normally, in Python, you want your code to support inheritance, of course (sinc...
Why can't I use switch statement on a String?
...structions.
Before JDK 7
Prior to JDK 7, enum could approximate a String-based switch. This uses the static valueOf method generated by the compiler on every enum type. For example:
Pill p = Pill.valueOf(str);
switch(p) {
case RED: pop(); break;
case BLUE: push(); break;
}
...
Javascript web app and Java server, build all in Maven or use Grunt for web app?
...ol in the Java toolkit for a while I have come to a few conclusions:
Java Based Tooling
There are a handful of tools out there but the most popular are JAWR and Wro4J. The biggest problem with both of these is that they are mostly Rhino based (WRO4J now has some Node support) and Rhino is dog slow...
Efficient way to determine number of digits in an integer
...eger, would be a lookup. Should be faster than the much shorter logarithm based approach. If you don't care about counting the '-', remove the + 1.
// generic solution
template <class T>
int numDigits(T number)
{
int digits = 0;
if (number < 0) digits = 1; // remove this line if ...
How can I get my webapp's base URL in ASP.NET MVC?
... ended up using: var request = HttpContext.Current.Request; urlBase = string.Format("{0}://{1}{2}", request.Url.Scheme, request.Url.Authority, (new System.Web.Mvc.UrlHelper(request.RequestContext)).Content("~"));
– Peter
Nov 28 '11 at 10:21
...
How to write log base(2) in c/c++
Is there any way to write log(base 2) function?
14 Answers
14
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Declaring abstract method in TypeScript
...ed to implement an abstract method as makeSound(input : number) : string { based on the above example where input should be a string. Type 'string' is not assignable to type 'number'..
– Fenton
Dec 6 '17 at 11:50
...
Java GUI frameworks. What to choose? Swing, SWT, AWT, SwingX, JGoodies, JavaFX, Apache Pivot? [close
...s in the lack of complex UI components like tree tables. There is a webkit-based component to display HTML.
When it was introduced, my first thought was "five years too late." If your aim is a nice app for phones or web sites, good. If your aim is professional desktop application, make sure it deli...
关于php的socket初探 - PHP - 清泛IT论坛，有思想、有深度
...rno)");
stream_set_blocking($socket_server, 0); // 非阻塞
$base = event_base_new();
$event = event_new();
event_set($event, $socket_server, EV_READ | EV_PERSIST, array(__CLASS__, 'ev_accept'), $base);
event_base_set($event, $base);
event_add($event);
event_base_loop($base);...
How to create abstract properties in python abstract classes
In the following code, I create a base abstract class Base . I want all the classes that inherit from Base to provide the name property, so I made this property an @abstractmethod .
...