Re: [Pharo-users] Set on Attribute

[Sean P. DeNigris]

Sven Van Caekenberghe-2 wrote
> PluggableSet ?

Perfect! Thanks :)

My actual usage, in case anyone finds it helpful, was removing duplicate
files:
uniqueFiles := PluggableSet new
equalBlock: [ :a :b | a isMD5Equal: b ];
hashBlock: [ :f | f binaryReadStreamDo: [ :str | (MD5 
hashStream: str) hex
hash ] ]
yourself.
allFiles := folder filesMatching: '*.eml'.
uniqueFiles addAll: allFiles.
(allFiles difference: uniqueFiles) do: #delete.



-
Cheers,
Sean
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Re: [Pharo-users] Set on Attribute

[monty]

Other than PluggableSet, something like Unix's sort and uniq combo would work:

condenseOnFirst: aCollection
| lastSelected |

^ aCollection sorted select: [:each |
(lastSelected isNil
or: [lastSelected first ~= each first])
ifTrue: [
lastSelected := each.
true]
ifFalse: [false]]



> Sent: Thursday, August 25, 2016 at 7:42 PM
> From: "Sean P. DeNigris" <s...@clipperadams.com>
> To: pharo-users@lists.pharo.org
> Subject: [Pharo-users] Set on Attribute
>
> Say I have a collection like #('ab' 'ac' 'ba' bc') and I want to condense it
> so that a certain attribute is unique. In this example, say the first
> character, so I want one object where the first character is $a and one $b,
> but I don't care which object i.e. 'ab' or 'ac' for $a, but not both.
> 
> Is there an elegant way to do that?
> 
> 
> 
> -
> Cheers,
> Sean
> --
> View this message in context: 
> http://forum.world.st/Set-on-Attribute-tp4912672.html
> Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.
> 
> 

Re: [Pharo-users] Set on Attribute

[Sven Van Caekenberghe]

PluggableSet ?

> On 26 Aug 2016, at 01:42, Sean P. DeNigris  wrote:
> 
> Say I have a collection like #('ab' 'ac' 'ba' bc') and I want to condense it
> so that a certain attribute is unique. In this example, say the first
> character, so I want one object where the first character is $a and one $b,
> but I don't care which object i.e. 'ab' or 'ac' for $a, but not both.
> 
> Is there an elegant way to do that?
> 
> 
> 
> -
> Cheers,
> Sean
> --
> View this message in context: 
> http://forum.world.st/Set-on-Attribute-tp4912672.html
> Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.
> 

[Pharo-users] Set on Attribute

[Sean P. DeNigris]

Say I have a collection like #('ab' 'ac' 'ba' bc') and I want to condense it
so that a certain attribute is unique. In this example, say the first
character, so I want one object where the first character is $a and one $b,
but I don't care which object i.e. 'ab' or 'ac' for $a, but not both.

Is there an elegant way to do that?



-
Cheers,
Sean
--
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http://forum.world.st/Set-on-Attribute-tp4912672.html
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