[Newbies] storeString vs. printString
Bert Freudenberg
bert at impara.de
Tue Jul 4 09:25:30 UTC 2006
Am 04.07.2006 um 10:17 schrieb Mathieu SUEN:
> Hi squeakers,
>
> I have an extremly simple question.
>
> What is the diffrence between #storeString and #printString?
#printString (implemented by #printOn:) creates a human-readable
description of your object. #storeString (or, more precisely,
#storeOn:) is a machine-parsable serialization of your object.
"Storing" writes out code that recreates the object when later read
back in (using #readFrom:). So a test for correctness of storing
would mean to compare the original and the read-back object.
In the case of literal objects, both representations are usually
equivalent. But try this:
a := {1. 2 at 3. #four}.
a storeString -> a printString
which gives
'(Array with: 1 with: 2 at 3 with: #four)' -> '#(1 2 at 3 #four)'
Only the storeString can be correctly read back in
Object readFrom: a storeString
- Bert -
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