Roelof,
One technique to eliminating the use of #ifTrue:ifFalse: is to use
double dispatching. There are some good examples of using double
dispatching in Ralph Johnson's paper "ARITHMETIC AND DOUBLE DISPATCHING
IN SMALLTALK-80"[1]. you should be able to get the basic idea by
skimming the smalltalk code examples.
I used double dispatching fairly extensively in Metacello ...
In practice you may not eliminate all use of #ifTrue:ifFalse:, but
double dispatching works quite well in places where you are tempted to
do type checking...
Dale
[1]
https://www.researchgate.net/publication/239578755_Arithmetic_and_double-_dispatching_in_smalltalk-80
On 11/27/18 8:40 AM, Roelof Wobben wrote:
Hello,
Yesterday I had a talk with luc frabresse about using if then.
He said if I understand it right, Its the best to not using a if then
or a ifTrue/ifFalse.
Can anyone help me figure out how to rewrite this project so I will
not use the ifTrue in the basement function.
my code so far can be found here :
https://github.com/RoelofWobben/AOC2015
Roelof
