There's no way you could use an integer (or any number) as a selector. So what you can do if you want to avoid using the "wordy" #value: selector is to implement your own selector in BlockClosure.
It could be a #v: selector (so it is still a keyword selector) or a symbol such as #<< that ends up calling #value:, but keep in mind that if you use a symbol you cannot extend it to have more than one parameter. Regards, El mié., 23 de octubre de 2019 09:22, main <johan_forsberg...@hotmail.com> escribió: > Hello fellow Pharoians (?) from a lonely Swede. > > I just found out about Pharo (and Smalltalk) two days ago and I'm already > loving it :) > However, there is a behavior I would like to change, or be enlightened > about > how it could be done. > > As I understand it (bear with me) BlockClosure from Kernel-Methods does not > understand (by default?) how to respond to an "anonymous object" (no > message > name). > > Is there any way this could be implemented? I'll post an example soon > (I currently use both Pharo 7 and 8) > > If I write the following: > > [:x | x + 1] value: 3 > > and evaluate it, I get the expected result, which is 4. > > That's nice. > > What I would really like is to be able to just send 3 to BlockClosure and > make it repond as above. > > Like this: > > [:x | x + 1] 3 > > or like this: > > 3 [:x | x + 1] > > Would this be possible? > > ----------------------- > > Also as a bonus, would it be possible to use this for "function > composition", "Block composition" or similar? > > Example of composition: > > [ :f :g | [ :x | f value: (g value: x) ] ] > > I could use this construct like this for example: > > (([ :f :g | [ :x | f value: (g value: x) ] ]) > value: [:x | x + 1] > value: [:x | x - 1]) > value: 5 > > But… It's a bit wordy. > > What I would like to be able to do (essentialy remove "value:"): > > (([ :f :g | [ :x | f (g x) ] ]) > [:x | x + 1] > [:x | x - 1]) > 5. > > Or in one line: > (([ :f :g | [ :x | f (g x) ] ]) [:x | x + 1] [:x | x - 1]) 5. > > While this might seem obscure, I would really find it useful. > > Can it be done? > > Thanks in advance > > > > -- > Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html > >
