I've always considered "all objects respond to #value" as a bug. It certainly is not portable: it wasn't in Smalltalk-80, or Apple Smalltalk, or ANSI Smalltalk, and it isn't in GNU Smalltalk or Dolphin Smalltalk or VisualWorks. It's a peculiarity of Squeak/Pharo and Smalltalk/X. This is a misfeature that can hide bugs until they are ready to hurt you.
On Mon, 6 Jan 2020 at 12:13, Santiago Dandois <santid...@gmail.com> wrote: > > It's better (conceptually and in performance) to use the inner block, but is > not always necessary. The #or: message sends the `value` message to it's > collaborator if the bolean is false. Blocks responds to value executing > theirs code, but all objects respond to value since it's defined in the > Object class as ^self. Therefore, the result is the same but the messages > involved and the order in which they are being sent are not. In performance, > for the case where the first bolean was true, is better the one with the > surrounding block , since the code inside it is never being executed. > > You should really try both versions with the debugger to see it by yourself. > > Cheers, > Santiago Dandois > > El dom., 5 ene. 2020 a las 19:53, xap (<x...@router.33mail.com>) escribió: >> >> thx Rixhard. looks like or: takes an 'alternativeBlock', i.e. a block. >> however substituting a parenthesized expression (or what i assume is one) as >> I did before, in place of the inner block, w/ no other changes has the >> method continue to work as expected, hence my question. *shrug* i need to >> rtfm :-/ >> >> >> >> -- >> Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html >>
