Two small points of feedback

Mark Thornton mthornton at
Fri Jan 4 08:42:38 PST 2013

On 04/01/13 14:42, Stephen Colebourne wrote:
> In our regular lunchtime meeting at OpenGamma I posed two questions to
> get feedback:
> 1) "What does this code do"
>    range(1, 10).forEach( (i) -> System.out.println(i) );
> First response "if that doesn't print 1 to 10 then someone needs their
> head examining" (someone working in multiple languages more focussed
> on maths than Java coding)
It isn't just Java where the half open interpretation might be expected. 
I think that would be the expectation in many C derived languages. There 
is also a family of languages where closed intervals are normal 
(Fortran, Pascal, etc). Either be explicit about inclusion or accept 
that Java is a member of the half open group of languages.

Incidentally, mathematicians might expect (1,10) to mean the set that 
excludes both ends!


More information about the lambda-dev mailing list