[Newbies] indenting code
benschroeder at acm.org
Wed Dec 13 14:09:08 UTC 2006
> I'm asking myself if there is any common sense about
> how to indent the code in smalltalk/squeak.
> Most of the time I see something like
> statement do: [ :parameter |
> otherStatement selector: [
> mostinnerstatement ] ].
> statement do: [ :parameter | otherStatement ].
Kent Beck's "Smalltalk Best Practice Patterns" has a good section on
this. He presents ten simple patterns to drive the formatting of
The book is a bit older now - it dates from 1997 - but might not be
too hard to find. I think our local library system (here in Columbus,
OH) even had a copy.
Beck's Indented Control Flow pattern says,
Put zero or one argument messages on the same lines as their receiver.
For messages with two or more keywords put each keyword/argument
pair on its own line, indented one tab.
So, you would say
limit := myList size.
larger := firstCount max: secondCount.
inRange := amount
He also has patterns that describe how to format conditionals,
blocks, etc. The rest of the book is good too - it has advice about
other parts of Smalltalk usage.
As others have said, of course the most important thing is to pick a
style that works well and use it consistently. I like Beck's style,
but as you have seen, there are other good ones in use.
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