Operator Overloading in Groovy Step 12

Another shortcut in Groovy isOperator Overloading.
You can type something like this:
def d = new Date()
println d.next()
(1..3).each{println d++}

This code will print:
Mon Jan 11 12:06:11 PST 2010
Sun Jan 10 12:06:11 PST 2010
Mon Jan 11 12:06:11 PST 2010
Tue Jan 12 12:06:11 PST 2010

assuming that today's date is January 10th at 12:06 PST in 2010.

This code will instatiate a new date and print the next date.
Then it will print three more dates starting from today's date.

The d++ will call the next method.

Here are other operator overloading:

Operator	Method
a==b or a!=b	a.equals(b)
a + b	a.plus(b)
a-b	a.minus(b)
a*b	a.multiply(b)
a/b	a.div(b)
a%b	a.mod(b)
a++ or ++a	a.next()
a-- or --a	a.previous()
a & b	a.and(b)
a | b	a.or(b)
a[b]	a.getAt(b)
a[b]=c	a.putAt(b,c)
a<<b	a.leftShift(b)
a>>b	aa.rightShift(b)
a<b or a>b or a<=b or a>=b	a.compareTo(b)

For example:

def b=new Date()
def v = new Date()
println "b"+b
println "v"+d
if(b.equals(v))
println "true"
else
println "false"