[Newbies] pretty printing
bert at freudenbergs.de
Mon Sep 29 17:38:06 UTC 2008
Am 29.09.2008 um 10:07 schrieb Claus Kick:
> Bert Freudenberg wrote:
> > Guess I have to provide an alternative:
>> #('&' '&' '<' '<' '>' '>' '''' ''' '"' '"')
>> pairsDo: [:c :s| string := string copyReplaceAll: c with: s].
>> (this is the same approach as in String>>asHTML)
> Ok, to nitpick (;)) one message send less for each pair:
> #('&' '&' '<' '<' '>' '>' '''' ''' '"' '"')
> pairsDo: [:c :s| string := string copyReplaceAll: c with: s
This is silly advice. Why would you willingly expose an implementation
detail? There are many constructs that could be expanded but
readability and portability is hurt by that.
> How do pairs compare to dictionaries in Squeak?
Well, there are no "pairs" per se but just an iteration method on
When iterating a Dictionary, the order is unpredictable. In my example
it is vital to replace '&' first.
Also, Squeak does not have a literal syntax for dictionaries but for
Arrays so my example is more efficient because the Array is
constructed at compile-time. OTOH, in real code one might put the
dictionary into a class variable so this wouldn't matter.
- Bert -
More information about the Beginners