On Sat, 16 Mar 2019 at 06:33, Tim Mackinnon <tim@testit.works> wrote:
Hi - in my quest to understand the edgier details of Pharo (and Smalltalk) - and driven by fresh thoughts of completing exercism exercises - I was surprised to find that there is no #excludes: operation on collection to mirror the #includes: operation?

I was curious about this - its seems a strange omission?

Of course I can inverse it with not, or do things a different way - but we have ifTrue: mirrored with ifFalse, empty/notEmpty so am I missing something?

I wanted to write something like


aString detect: [:c | ($0 to: $1) excludes: c] ifFound: aBlock. (Evaluate a block if the string isn���t all 0 and 1���s)

purely off the cuff, if you want the opposite logic what about...
�� �� ��aString detect: [:c | (($0 to: $1) includes: c) not ] ifFound: aBlock.����
��

Of course I can write this as:

(aString reject: [:c | c = $0 | c = $1)) ifNotEmpty: aBlock

cheers -ben��