Magma collection - where:

[Udo Schneider]

Facu,

> So, my question is: Can I use where: for this funcionality or I need use
> select:? If you think that where: is appropiate, Do I need create a new
> king of index to reach that?
I added the following method in MagmaCollectionReader which should 
fullfill your needs:

read: attributeSymbol beginsWith: aKey
	^ self read: attributeSymbol from: aKey upTo: aKey maAlphabeticalNext

This allows you to write your original select: based call as

self customers where: [:reader | reader read: #name beginsWith: 
firstsLetterOfName asUppercase]


CU,

Udo