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How to get the current loop index when using Iterator?
...index: " + iter.nextIndex() + " value: " + iter.next());
}
Make sure you call the nextIndex BEFORE you actually get the next().
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Android - startActivityForResult immediately triggering onActivityResult
I am launching activities from the main activity in my app using the call startActivityForResult(intent, ACTIVITY_TYPE) , and they are all working but one.
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What does the ng stand for in Angular.js directives
...llisions in future versions of Angular.
From the FAQ:
Why is this project called "AngularJS"? Why is the namespace called "ng"?
Because HTML has Angular brackets and "ng" sounds like "Angular".
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What is pseudopolynomial time? How does it differ from polynomial time?
...ssibly a lot faster.
In 2004, three computer scientists published a paper called PRIMES is in P giving a polynomial-time algorithm for testing whether a number is prime. It was considered a landmark result. So what's the big deal? Don't we already have a polynomial-time algorithm for this, namely t...
What is the difference between == and Equals() for primitives in C#?
...e == operator is defined as taking two ints (or shorts or longs).
When you call it with an int and a short, the compiler will implicitly convert the short to int and compare the resulting ints by value.
Other ways to make it work
Primitive types also have their own Equals() method that accepts the s...
How do I compile and run a program in Java on my Mac?
.../Users/David/HelloWorld.java". This simple program declares a single class called HelloWorld, with a single method called main. The main method is special in Java, because it is the method the Java runtime will attempt to call when you tell it to execute your program. Think of it as a starting point...
Passing an integer by reference in Python
...nt binds a "Name"(s) on the left to an "Object"(s) on the right. When you call a function, you pass the "Object" (effectively binding it to a new local name within the function).
– mgilson
Apr 8 '13 at 12:25
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Advantages of using prototype, vs defining methods straight in the constructor? [duplicate]
...aration is hoisted, but not the assignment. For example:
// Error, fn is called before the function is assigned!
fn();
var fn = function () { alert("test!"); }
// Works as expected: the fn2 declaration is hoisted above the call
fn2();
function fn2() { alert("test!"); }
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What is the fastest way to compute sin and cos together?
...at not all modern compilers optimize calculation of sine and cosine into a call to FSINCOS. In particular, my VS 2008 didn't do it that way.
Edit:
The first example link is dead, but there is still a version at the Wayback Machine.
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Explaining Python's '__enter__' and '__exit__'
...A useful example could be a database connection object (which then automagically closes the connection once the corresponding 'with'-statement goes out of scope):
class DatabaseConnection(object):
def __enter__(self):
# make a database connection and return it
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retur...