Hi - I just ran a great MobProgramming session with Smalltalk for the XProLo group - and there was lots of great feedback and questions, however one of them really got me thinking…
We did a little exercise to create a Person class with name, dob - and then we TDD’d an age method… which seems simple on the surface but it gets to an interesting point - what about leap years? How old is someone on those years? I thought that our plethora of Date/Duration classes might handle this - but I couldn’t spot something obvious and was wondering if someone had a neat answer. Essentially if you try: age ^Date today - self dob You get a Duration, But there isn’t : ^(Date today - self dob) asYears There is is asDay ^(Date today - self dob) asDays But then can you really ^(Date today - self dob) asDays / 365) truncated But what about leap years… so ^(Date today - self dob) asDays / 365.25) truncated It all feels a bit inelegant and I suspect there is a better Smalltalk way that is eluding me? Any suggestions? Tim
