Hello, Then this should be added to Integer class as well no?
So the API is uniform. Because, if I am not wrong, for now if you want to generate an integer that could be negative you have to use an Interval (-10 to: 10) atRandom Since 10 atRandom In fact generates a Natural number and not an Integer… :-) Julien --- Julien Delplanque Doctorant à l’Université de Lille 1 http://juliendelplanque.be/phd.html Equipe Rmod, Inria Bâtiment B 40, Avenue Halley 59650 Villeneuve d'Ascq Numéro de téléphone: +333 59 35 86 40 > Le 16 avr. 2018 à 12:51, Sven Van Caekenberghe <s...@stfx.eu> a écrit : > > I think > > Float randomFrom: -4.1 to: 2.5 > > or > > Float randomBetween: -4.1 and: 2.5 > > would be the most descriptive and compliant to your signature ;-) > > An interval does not necessarily contain Floats. > Going to the class side of Float makes sense because you create a new > instance. > >> On 16 Apr 2018, at 11:51, Serge Stinckwich <serge.stinckw...@gmail.com> >> wrote: >> >> Hi Pharoers, >> >> some random musings about Random numbers :-) >> >> In the context of the CORMAS project: >> http://cormas.cirad.fr/indexeng.htm >> I would like to propose an API for manipulating random numbers >> to users who are not developers but modelers of complex systems. >> >> In CORMAS, people need to generate a lot of random numbers for simulation >> for exemple. For example, you can do: >> >> Cormas randomFloatFrom: -4.1 to: 2.5 >> >> At the moment, there is no Pharo API to generate with a one-liner a random >> float number between two values for example. >> >> You can do this for integers: 10 atRandom to generate an integer between 1 >> to 10. >> >> There is atRandom defined on Interval, so can you say : >> (2.3 to: 4.5) atRandom >> but it will not generate a random float numbers between 2.3 and 4.5 >> >> but numbers like: 2.3, 3.3 or 4.3. >> because Interval are considered as a Collection. >> >> Any comments about that ? >> How we can enhance the situation ? >> Any interest to introduce a method to produce random float numbers in an >> interval in Pharo ? >> >> Thank you >> -- >> Serge Stinckwich >> UMI UMMISCO 209 (SU/IRD/UY1) >> "Programs must be written for people to read, and only incidentally for >> machines to execute." >> http://www.doesnotunderstand.org/ > >
