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How do I implement interfaces in python?
... several uses for interfaces. Some of them are covered by Pythons Abstract Base Classes, introduced in Python 2.6. They are useful, if you want to make base classes that cannot be instantiated, but provide a specific interface or part of an implementation.
Another usage is if you somehow want to sp...
Font scaling based on width of container
...t queries come in. Unlike media-queries, element queries would size things based on its containing block, not the viewport, which would be amazing! But unfortunately it doesn't exist yet. However, some polyfills and proof-of-concepts exist if you are interested: coding.smashingmagazine.com/2013/06/2...
How to generate JAXB classes from XSD?
.../1998/namespace")
@XmlSchemaType(name = "anyURI")
protected String base;
@XmlAttribute(namespace = "http://www.w3.org/XML/1998/namespace")
@XmlJavaTypeAdapter(CollapsedStringAdapter.class)
@XmlSchemaType(name = "language")
protected String lang;
@XmlAnyAttribute
pri...
Initialize parent's protected members with initialization list (C++)
...you describe. You'll have to add a constructor (could be protected) to the base class to forward it along. Something like:
class Parent
{
protected:
Parent( const std::string& something ) : something( something )
{}
std::string something;
}
class Child : public Parent
{
private:
...
What is the difference between Spring, Struts, Hibernate, JavaServer Faces, Tapestry?
...nd seamless integration of various other technologies.
Struts is an action-based presentation framework (but don't use it for a new development).
Struts 2 is an action-based presentation framework, the version 2 of the above (created from a merge of WebWork with Struts).
Hibernate is an object-relat...
Expand a random range from 1–5 to 1–7
...will run in a constant amount of time, since 1/7 is an infinite decimal in base 5. One simple solution would be to use rejection sampling, e.g.:
int i;
do
{
i = 5 * (rand5() - 1) + rand5(); // i is now uniformly random between 1 and 25
} while(i > 21);
// i is now uniformly random between 1...
Dual emission of constructor symbols
...e> ::= C1 # complete object constructor
::= C2 # base object constructor
::= C3 # complete object allocating constructor
::= D0 # deleting destructor
::= D1 # complete object destructor
::= D2...
C++ static virtual members?
...ation should be called - the same way as calling regular virtual method on base class instance. (Of course, if C++ supported virtual static methods)
– Spook
Dec 18 '13 at 7:59
13
...
How can I call controller/view helper methods from the console in Ruby on Rails?
...t;head>\n..."
ApplicationController methods:
foo = ActionController::Base::ApplicationController.new
foo.public_methods(true||false).sort
foo.some_method
Route Helpers:
app.myresource_path # => "/myresource"
app.myresource_url # => "http://www.example.com/myresource"
View H...
how to convert binary string to decimal?
...converts strings to numbers, and it takes a second argument specifying the base in which the string representation is:
var digit = parseInt(binary, 2);
See it in action.
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