[Haskell-cafe] Turtle library : grepping on Text vs FilePath

[Ruben Astudillo]

On 07/06/17 03:08, Joe Hillenbrand wrote:
> Is onFiles[1] what you're looking for?
> 
> https://hackage.haskell.org/package/turtle-1.3.5/docs/Turtle-Prelude.html#v:onFiles

Almost. Grep operates over Shell Line. Line is just a newtype over Text.
I still don't know if this is telling me "don't do that".

> On Tue, Jun 6, 2017 at 10:16 PM, Ruben Astudillo <ruben.astud at gmail.com> wrote:
>> Dear list
>>
>> On the Turtle library, the grep function got the following signature
>>
>>     grep :: Pattern a -> Shell Line -> Shell Line
>>
>> For it to filter output of the `ls :: FilePath -> Shell FilePath` I got
>> to fmap and transform via de Turtle.Format or Turtle.Line modules. Is
>> this an indicator I shouldn't be doing this? Is the library telling me
>> to use `find`? or is just accidental?
>>
>> --
>> -- Ruben
>>
>>
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-- 
-- Ruben

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