Hi all,


recently I stumbled upon an extension method for Dictionary which *might* fit well into the Trunk:


Dictionary >> #at: key ifAbsentPut: startBlock ifPresentPut: nextBlock
        "(c) 2020 Basti Kruck und Marcel Taeumel. :-)"  (self includesKey: key) ifFalse: [
                ^ self at: key put: startBlock value].  ^ self
                at: key
                put: (nextBlock value: (self at: key))


See https://github.com/hpi-swa/vivide/blob/c4ac5ea562bd563358d52ee41c149a3fbcffd90e/repository/Vivide.package/Dictionary.extension/instance/at.ifAbsentPut.ifPresentPut..st.


Usage:

counter := counters at: key ifAbsentPut: [0] ifPresentPut: [:i | i + 1]


What do you think, should we copy this into the Trunk? Or is it just fine to do something like this instead at the sender side:

counter := counters at: key put: (counters at: key ifAbsent: [0] ifPresent: [:i | i + 1])


<http://www.hpi.de/>
Also, I'm not sure about the order of arguments.

Best,
Christoph
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