[Newbies] Re: go to the end of a loop

[Joseph Alotta]

thank you.  i will studying this.

sincerely,

Joe.



> On Apr 26, 2016, at 7:48 AM, Balázs Kósi [via Smalltalk] <ml-node+s1294792n4892242h51 at n4.nabble.com> wrote:
> 
> categoriesByPayees := Dictionary new.
> FileStream readOnlyFileNamed: 'payees-by-categories.txt' do: [ :file |
>     " With #readOnlyFileNamed:do: you don't have to worry about closing the file,
>     it ensures that #close is sent to the file, even if you leave the block through an Exception. "
>     [ file atEnd ] whileFalse: [
>         | parts |
>         parts := (file nextLine findTokens: $| escapedBy: Character tab)
>             collect: #withBlanksCondensed.
>         " We collect the parts #withBlanksCondensed, so we don't have to call it repeatedly in the loop.
>         You can use unary selectors in place of blocks with one argument. You may look at the implementation
>         of Collection >> #collect: and Symbol >> #value: to find out why. I'm not sure what you really want is
>         #findTokens:escapedBy:, it cuts the string along | characters if they are not preceded by a tab."
>         parts size > 1 ifTrue: [ 
>             " We skip blank lines or categories without at least one payee. "
>             | category |
>             category := parts first.
>             parts allButFirstDo: [ :payee |
>                 (categoriesByPayees
>                     at: payee
>                     ifAbsentPut: [ OrderedCollection new ]) add: category
>                     " Your implementation only remembers the last category encountered for a payee.
>                     We can collect all the categories. " ] ] ] ]​





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