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Divide a number by 3 without using *, /, +, -, % operators
...n which performs the desired operation. But it requires the + operator, so all you have left to do is to add the values with bit-operators:
// replaces the + operator
int add(int x, int y)
{
while (x) {
int t = (x & y) << 1;
y ^= x;
x = t;
}
return y;
}...
How do you create a transparent demo screen for an Android app?
...a semi-transparent demo screen that is launched only when a user first installs my application. Here's an example from the Pulse News app:
...
What is the purpose of wrapping whole Javascript files in anonymous functions like “(function(){ … }
...
It's usually to namespace (see later) and control the visibility of member functions and/or variables. Think of it like an object definition. The technical name for it is an Immediately Invoked Function Expression (IIFE). jQuery plug...
What is the difference between aggregation, composition and dependency? [duplicate]
...e exists composition between class and students."
– TallPaul
Oct 11 '10 at 3:21
19
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Access-Control-Allow-Origin Multiple Origin Domains?
Is there a way to allow multiple cross-domains using the Access-Control-Allow-Origin header?
31 Answers
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Find object by id in an array of JavaScript objects
...
Basically I always use === because it works exactly like == in other programming languages. I consider == to be non-existent in JavaScript.
– Vicky Chijwani
Dec 11 '12 at 13:27
...
Difference between LoadFile and LoadFrom with .NET Assemblies?
...ed in the LoadFrom context.
LoadFile() doesn't bind through Fusion at all - the loader just goes
ahead and loads exactly* what the
caller requested. It doesn't use
either the Load or the LoadFrom
context.
So, LoadFrom() usually gives you what
you asked for, but not necessarily.
...
How to determine if a decimal/double is an integer?
...
For floating point numbers, n % 1 == 0 is typically the way to check if there is anything past the decimal point.
public static void Main (string[] args)
{
decimal d = 3.1M;
Console.WriteLine((d % 1) == 0);
d = 3.0M;
Console.WriteLine((d % 1) == 0);
}
...
How to update Ruby to 1.9.x on Mac?
...ve) RVM (Ruby Version Manager) is the Standard for upgrading your Ruby installation on OSX: https://rvm.io
To get started, open a Terminal Window and issue the following command:
\curl -L https://get.rvm.io | bash -s stable --ruby
( you will need to trust the RVM Dev Team that the command is no...
What is the difference D3 datum vs. data?
...iled answer to this question here, but the post below pretty much captures all the key points regarding the two methods and how they differ from each other.
When supplying data as an input argument
selection.data(data) will attempt to perform a data-join between the elements of the data array wit...