Two small points of feedback

Ali Ebrahimi ali.ebrahimi1781 at gmail.com
Fri Jan 4 22:34:09 PST 2013


Hi,

range(int from,int to,int step)
range(double from,double to,double step)


Ali

On Sat, Jan 5, 2013 at 2:01 AM, Howard Lovatt <howard.lovatt at gmail.com>wrote:

> Re naming convention
>
> In my own libraries I consistently use name[Types], which mimics the base
> generic declaration e.g.:
>
> Callable2<I1, I2, O> { O call(I1 i1, I2 i2); }
> Callable2TTL<I1, I2> extends Callable2<I1, I2, Long> {
>   default Long call(I1 i1, I2 i2) { return callTTL(i1, i2); }
>   long callTTL(I1 i1, I2 i2);
> }
> Callable2LLL extends Callable2TTL<Long, Long> {
>   default long callTTL(Long i1, Long i2) { return callLLL(i1, i2); }
>   long callLLL(long i1, long i2);
> }
>
> Sent from my iPad
>
> On 05/01/2013, at 1:42 AM, Stephen Colebourne <scolebourne at joda.org>
> 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)
> > Second responses "suppose it might depend"/"have to check docs" (Java
> > developers)
> >
> > Personally, I think that while it can be explained/documented that it
> > is a half-open range, it reads far better in code as a closed range.
> >
> >
> > 2) "Which of these corresponds to IntFunction"
> >
> >  (int) -> T
> >  (T) -> int
> >
> > Response chose the first (whereas the codebase has the second).
> >
> > Personally I would choose the first (and use FuncInt, FunctionInt,
> > CalcInt, CalculatorInt or IntCalculator for the second).
> >
> > (poll highly unscientific, respondents had limited/no exposure to
> > lambdas, yada yada yada)
> > Stephen
> >
>
>


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