[clean-list] Re: where to look for module-functions --- Re: term reading and writing

[Thomas van Noort]

I guess so. Unfortunately, there is no API documentation available so the
best thing to do is browse through the definition modules.

Regards,
Thomas

>
> Thanks, Thomas, for your hints.
>
> And that brings me to another question.
> In general, where can I look in order to find what modules
> and/or functions are available in clean ?
> [ by browsing through all *.dcl files ?? ]
>
> Thanks
> hp
>
>
> On Thu, 1 May 2008, Thomas van Noort wrote:
>
>> Hi,
>>
>> The Generics library, provided in the Clean distribution, contains two
>> modules
>> which define exactly the functions you require.
>>
>> HP Wei wrote:
>> > Newbie questions--
>> >
>> > Suppose there is a data type,
>> >
>> > : : Person = { name :: String,
>> >               id :: (Int, String),
>> >               flag :: Bool }
>> >
>> > Suppose a file whose name is fname.txt has the following content:
>> > { name = "a_name",
>> >   id = (123, "an_id"),
>> >   flag = True }
>> >
>> > -----------------------------------
>> > Q1: how do I 'read in' a Person from fname.txt ?
>> >    [ i.e.
>> >      If person is of type Person,
>> >      person = _read_ "fname.txt"
>> >
>> >    is there a built-in fx that does the above _read_ ?
>> >    Or shall I need to write a parse-fx to do this ?
>>
>> Import the module GenParse from the Generics library and use the
>> function
>> parseFile,
>>
>> parseFile : : File -> Maybe a | gParse{|*|} a
>>
>> which requires you to derive an instance of gParse for Person,
>>
>> derive gParse Person
>>
>> >
>> > Q2: if person = {name ="xyz",
>> >                  id = (456, "id"),
>> >                  flag = False}
>> >
>> >     how do I _print_ this 'person' to a text file
>> >     fname1.txt ?
>>
>> Import the module GenPrint from the Generics library and use the
>> function
>> printToString,
>>
>> printToString : : a -> String | gPrint{|*|} a
>>
>> which requires you to derive an instance of gPrint for Person,
>>
>> derive gPrint Person
>>
>> The function returns a String but you can easily define a function
>> yourself
>> which prints to a file,
>>
>> printToFile : : a File -> File | gPrint{|*|} a
>>
>> >
>> > *** for those who knows Erlang, Q1 and Q2 are term
>> >     reading and writing.
>> >
>> > THanks
>> > HP
>> >
>> >
>> > _______________________________________________
>> > clean-list mailing list
>> > clean-list at science.ru.nl
>> > http://mailman.science.ru.nl/mailman/listinfo/clean-list
>>
>> Regards,
>> Thomas
>>
>>
>>
>