Chris Muller uploaded a new version of Collections to project The Trunk: http://source.squeak.org/trunk/Collections-cmm.785.mcz
==================== Summary ====================
Name: Collections-cmm.785 Author: cmm Time: 30 March 2018, 5:57:37.727038 pm UUID: 37e9870a-5379-4185-8538-fada710dad5d Ancestors: Collections-eem.784
Add #at:ifPresent:ifAbsent: for API compatibility with other kinds of directly-accessible Collections.
=============== Diff against Collections-eem.784 ===============
Item was added: + ----- Method: SequenceableCollection>>at:ifPresent:ifAbsent: (in category 'accessing') ----- + at: index ifPresent: elementBlock ifAbsent: exceptionBlock + "Answer the value of elementBlock on the element at position index. If I do not contain an element at index, answer the result of evaluating exceptionBlock." + ^ elementBlock value: + (self + at: index + ifAbsent: [ ^ exceptionBlock value ])!
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