The first version: (#(1 2 3) asSet collect: #odd) do: [ :each | Transcript show: each; cr ]
is rather straight forward I believe, as collect: and do: has been around forever (relatively speaking). #(1 2 3) asSet collect: #odd thenDo: [ :each | Transcript show: each; cr ] On 8 September 2019 at 09.13.36, Richard Sargent ( richard.sarg...@gemtalksystems.com) wrote: I am skeptical of one that relies on a specific implementation rather than a specific definition. I share your feeling. I am not sure where such a definition would come from. In Squeak it is defined as: collect: collectBlock thenDo: doBlock ^ (self collect: collectBlock) do: doBlock In pharo as: collect: collectBlock thenDo: doBlock ^ self do: [ :each | doBlock value: (collectBlock value: each)] I might have called the method collect:eachDo:, but we each have slightly different styles. What I like about the pharo version is that is a shorthand for something which is not achieved by mere parentheses. Best, Kasper
