> On 23 Jan 2015, at 20:53, Hernán Morales Durand <hernan.mora...@gmail.com>
> wrote:
>
> Hi Sven,
>
> 2015-01-23 16:06 GMT-03:00 Sven Van Caekenberghe <s...@stfx.eu>:
> Hi Hernán,
>
> > On 23 Jan 2015, at 19:50, Hernán Morales Durand <hernan.mora...@gmail.com>
> > wrote:
> >
> > I used to use a CSV parser from Squeak where I could attach conditional
> > iterations:
> >
> > csvParser rowsSkipFirst: 2 do: [: row | " some action ignoring first 2
> > fields on each row " ].
> > csvParser rowsSkipLast: 2 do: [: row | " some action ignoring last 2 fields
> > on each row " ].
>
> With NeoCSVParser you can describe how each field is read and converted,
> using the same mechanism you can ignore fields. Have a look at the senders of
> #addIgnoredField from the unit tests.
>
>
> I am trying to understand the implementation, I see you included
> #addIgnoredFields: for consecutive fields in
> Neo-CSV-Core-SvenVanCaekenberghe.21
> A question about usage then, adding ignored field(s) requires adding field
> types on all other remaining fields?
Yes, like this:
testReadWithIgnoredField
| input |
input := (String crlf join: #( '1,2,a,3' '1,2,b,3' '1,2,c,3' '')).
self
assert: ((NeoCSVReader on: input readStream)
addIntegerField;
addIntegerField;
addIgnoredField;
addIntegerField;
upToEnd)
equals: {
#(1 2 3).
#(1 2 3).
#(1 2 3).}
> > csvParser rowsWhere: [ " a condition block " ] do: [ : row | " ... " ].
>
> NeoCSVParser behaves a bit like a stream and a bit like a collection, there
> are #next, #atEnd and #upToEnd as well as #do: and #select:
>
>
> I was using the version from the Configuration and missed the
> #select:[thenDo:] update.
Yes, please use #bleedingEdge, I have to update #stable.
> > csvParser rowsUpTo: 500000 do: [ " some action for rows up to 500000 " ].
> > csvParser rowsFrom: 2000 to: 5000 do: [ " some action for rows between 2000
> > to 5000 " ].
>
> Those are not there, you will have to count yourself. #next can be used to
> #skip.
>
>
> Ok
>
> > I want to replace the parser with NeoCSVReader, is this easily possible
> > with the current implementation?
>
> Should work, let me know if you have any problems.
>
>
> Thank you Sven!
>
> Cheers,
