If you are new to the concept, here's a refresher. Or if you prefer the layman's version:
Let's say you want to have a lazily initialized singleton. Something like:
public class Foo {
private static Foo _foo = null;
public static Foo getInstance() {
if (_foo = null) {
_foo = new Foo();
}
return _foo;
}
}
All good and...
Code block, in a nutshell, are basically just "lambda" functions (also known as closures in many other languages, most apropos might be Groovy) that are tied directly to a single method call. The canonical case is the way Ruby does array iterators:
[1, 2, 3].each { |i| puts "the value is #{i}" }
In this case the code block "{ |i| ... }" is passed to the method "each". This method calls...
