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When monkey patching an instance method, can you call the overridden method from the new implementat
...possible, you should prefer something like this:
class Foo
def bar
'Hello'
end
end
class ExtendedFoo < Foo
def bar
super + ' World'
end
end
ExtendedFoo.new.bar # => 'Hello World'
This works, if you control creation of the Foo objects. Just change every place which creates...
How to disallow temporaries
... Foo (const char*) {}
};
void Foo (float);
int main ()
{
Foo ("hello"); // error
class Foo a("hi"); // OK
return 1;
}
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follo...
What is the difference between “text” and new String(“text”)?
...;
class Test {
public static void main(String[] args) {
String hello = "Hello", lo = "lo";
System.out.print((hello == "Hello") + " ");
System.out.print((Other.hello == hello) + " ");
System.out.print((other.Other.hello == hello) + " ");
System.out.print((h...
What does %s mean in a python format string?
... really simple example:
#Python2
name = raw_input("who are you? ")
print "hello %s" % (name,)
#Python3+
name = input("who are you? ")
print("hello %s" % (name,))
The %s token allows me to insert (and potentially format) a string. Notice that the %s token is replaced by whatever I pass to the st...
How to use a filter in a controller?
...hrough $filter
app.controller('MyController', function($filter) {
// HELLO
var text = $filter('uppercase')('hello');
// Hello
var text = $filter('uppercase')('hello', true);
});
Note: this gives you access to all your filters.
Assign $filter to a variable
This option allows...
The “backspace” escape character '\b': unexpected behavior?
... It moves the cursor backward, but doesn't erase what's there.
So for the hello worl part, the code outputs
hello worl
^
...(where ^ shows where the cursor is) Then it outputs two \b characters which moves the cursor backward two places without erasing (on your terminal):
hello worl...
z-index not working with fixed positioning
...gt;
<html>
<body>
<div id="over">
Hello Hello HelloHelloHelloHelloHello Hello Hello Hello Hello Hello Hello Hello Hello Hello Hello
</div>
<div id="under"></div>
</body>
</html>
Fiddle
...
Explicitly calling a default method in Java
...e it's required to name it explicitly.
class ParentClass {
public void hello() {
System.out.println("Hello ParentClass!");
}
}
interface InterfaceFoo {
default public void hello() {
System.out.println("Hello InterfaceFoo!");
}
}
interface InterfaceBar {
default ...
How to run a JAR file
... public static void main(String[] args)
{
System.out.println("Hello world");
}
}
manifest.mf:
Manifest-version: 1.0
Main-Class: Test
Note that the text file must end with a new line or carriage return.
The last line will not be parsed properly if it does not end with a
new line...
How do you find out the caller function in JavaScript?
...
function Hello()
{
alert("caller is " + Hello.caller);
}
Note that this feature is non-standard, from Function.caller:
Non-standard
This feature is non-standard and is not on a standards track. Do not use it on production ...