isNumber

[davidhesselbom]

Sometimes, we want to check that a floating point number isn't NaN. We do this by comparing the number to itself: if value != value, then value is NaN.

A property can be defined make this a little prettier:
isNumber ::= this == this

With it, the following program

value := 0.0f
value isNumber toString() println()
value /= value
value isNumber toString() println()

prints

true
false

But where should the function be added?

• To Numbers.ooc (where it will always be available), or
• to math.ooc (which will require anyone who wants to use it to import math)?

[davidpiuva]

Both ways works for me.

[niklasborwell]

@marcusnaslund Are we doing this?

[marcusnaslund]

Yes, I think this is a good idea.