> The difficulty I am having is that when I want to query the UserManager db > with something like: > > --- > RcIdentityBag(users) select: [ :each | each name := 'somename' ] > —
Not sure if it’s just a typo, but it appears you’re trying to use assignment ( := ) rather than comparison ( = ) so shouldn’t this be: select: [ :each | each name = 'somename' ] > It seems that currently the only I know how to do this is to create a select: > method in UserManager simply to pass the desired search string into the > UserManager class such that I can use the Collection Classes api to do the > actual work, as per: > > --- Pardon the not so smalltalky code --- > UserManager>>select: aString > | resultSet | > resultSet := users select: [ :each | each name := aString ]. > ^resultSet > --- > > I believe I read somewhere that in order to avoid this clunkiness that I > could refer to the users collection in UserManager via a symbol and access > the api of the identitySet directly. Something like: > > --- > UserManager class>>current > > > UserGlobals at: #FOO put users. > ... > --- > > But when I do this I am unable to do something like: > > --- > #FOO add: user > --- This isn’t really necessary - it’s totally up to your application design. The singleton will work fine. > Finally Questions: > > 1. Am I totally off the mark with the use of smalltalk symbols? > 2. Must I create the API in the managing class to perform the specific > functions I need from the collection API with respect to querying the > collection? > 3. Is there a smalltalk way of doing this properly that I missed (reading all > the docs I can find in random order based of info I need - probably missing > the finer points)? > > Any nudge in the correct direction would be greatly appreciated. It all looks good, apart from the select block. Cheers
