Oxygen Basic

Programming => Problems & Solutions => Topic started by: Frankolinox on June 30, 2014, 12:44:40 AM

Title: class example question
Post by: Frankolinox on June 30, 2014, 12:44:40 AM

lalala :)

Title: Re: class example question
Post by: pber on June 30, 2014, 03:04:25 AM

Code: [Select]

class cAstroUnit
    double a
    double b
    double c
METHOD constructor(a1 AS DOUBLE)
a = a1
b = a1*149597870691
c = b/1000
END METHOD

METHOD ToString() AS STRING
return a ", " b " meters = " c " kilometers"
END METHOD
  END CLASS

cAstroUnit cA
new cAstroUnit cA 123
print "result: " ca.toString()

...this just compiles, can't guess if it is right too.
cheers

Title: Re: class example question
Post by: Charles Pegge on June 30, 2014, 08:14:37 AM

new and del are used to create / destroy persistent objects in a C++ish  way.

When using these macros, constructor and destructor methods are expected, and the object is created from allocated memory, (like strings)

Trivial example:

Code: [Select]

class foo

bstring s
double  a,b,c

method constructor(double m)
a=1.5*m
b=2.5*m
c=3.5*m
s="name"
end method

method destructor()
a=0
b=0
c=0
frees a
end method

method sum()
return a+b+c
end method

end class

new foo FooObj(10)
print FooObj.sum '75
...
del FooObj