[Haskell-beginners] Count Words In File

[A. Mc.]

I had thought about doing something like that, except about 80% of the time
the words in the file won't have a delimitor such as in
"theblueskythegreenearth" but I still need to be able to count "the" or the
ordered sequence of [ t, h, e ] within such a character string (or [ b, l,
u, e ] or whatever)

Again, thank you for your time & thanks in advance.

On Fri, Jan 22, 2021, 4:03 AM <beginners-request at haskell.org> wrote:

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>    1.  Count Words from File (A. Mc.)
>    2. Re:  Count Words from File (Francesco Ariis)
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> Message: 1
> Date: Thu, 21 Jan 2021 09:49:03 -0800
> From: "A. Mc." <47dragonfyre at gmail.com>
> To: beginners at haskell.org
> Subject: [Haskell-beginners] Count Words from File
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>
> Hello,
>
> I apologize in advance if this is crossposting. My IRC client did not
> appear to be working properly.
>
> I am new to Haskell and I need to find a way to count specific words in a
> file.  File could contain spaces between words, no spacing, uppercase,
> lowercase, etc so I've standardized it to once the file is taken in,
> convert to lowercase and remove the spacing.  I've also read the postings
> about using ByteString instead of [Char] so I am trying to use that.  But,
> as it still seems to either view all elements as fused or each letter as
> individual, I'm not entirely sure how to tackle this.  The input after
> transforming would be something like "theblueskyisveryblue" for uniformity
> and would need to count "the" and "blue".  Feels like I should be able to
> do a map and foldr(?) but I'm not sure how to get Haskell to recognize
> 'the' for example and not count all the t's, h's, e's etc in the file, nor
> am I entirely sure how to properly compose a map-fold for character arrays
> like this.
>
> Thanks in advance and thank you for your time.
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> ------------------------------
>
> Message: 2
> Date: Thu, 21 Jan 2021 18:53:12 +0100
> From: Francesco Ariis <fa-ml at ariis.it>
> To: beginners at haskell.org
> Subject: Re: [Haskell-beginners] Count Words from File
> Message-ID: <20210121175312.GA23139 at extensa>
> Content-Type: text/plain; charset=utf-8
>
> Il 21 gennaio 2021 alle 09:49 A. Mc. ha scritto:
> > I am new to Haskell and I need to find a way to count specific words in a
> > file.  File could contain spaces between words, no spacing, uppercase,
> > lowercase, etc so I've standardized it to once the file is taken in,
> > convert to lowercase and remove the spacing.  I've also read the postings
> > about using ByteString instead of [Char] so I am trying to use that.
> But,
> > as it still seems to either view all elements as fused or each letter as
> > individual, I'm not entirely sure how to tackle this.  The input after
> > transforming would be something like "theblueskyisveryblue" for
> uniformity
> > and would need to count "the" and "blue".  Feels like I should be able to
> > do a map and foldr(?) but I'm not sure how to get Haskell to recognize
> > 'the' for example and not count all the t's, h's, e's etc in the file,
> nor
> > am I entirely sure how to properly compose a map-fold for character
> arrays
> > like this.
>
> Have you considered using `words`?
>
>     λ> :t words
>     words :: String -> [String]
>     λ> words "Chiare, fresche e dolci acque"
>     ["Chiare,","fresche","e","dolci","acque"]
>
>
>
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