On Sat, 27 Sep 2008 20:47:39 -0700, Ralph Johnson <[EMAIL PROTECTED]>
wrote:
On Sat, Sep 27, 2008 at 1:40 PM, Andy Burnett
<[EMAIL PROTECTED]> wrote:
I read somewhere - can't remember where - that setters are considered
evil.
This is not a good argument. Many Smalltalk objects are not modeled
after the real world. Even if they are, is there really any
difference between sprayPaint: aColour and colour: aColour?
Setters are neither good nor evil. It is how you use them that is
good or evil. Many people overuse setters. I try to avoid setters
because it is harder to tell where a variable is modified if there is
a setter. But sometimes they are just what you need.
If you're going to assign an action verb to a setter, it should be
reflective of the process.
donut := Donut makePlain.
donut ice: #chocolate.
donut addSprinkles: jimmies atRandom.
IMO.
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