Comparing zeros and numbers in groovy

Question

Why in groovy?

0 > null

Is this optional or is it just a consequence of the implementation of compareTo?

I am using Groovy 2.0.5.

+7

Simon Nov 23 '12 at 16:13

source share

1 answer

tim_yates · Accepted Answer · 2012-11-23T16:19:57+0000

In Groovy, null is the smallest possible element, so everyone > null

 assert 'tim' > null assert 0 > null assert -1 > null assert Double.NEGATIVE_INFINITY > null

This means that such things can work:

 [ 1, null, 3 ].sort()

Otherwise, what will happen? If you want this to work, you must say: "null is less than anything" or "null is more than anything" ...

Groovy chose the former