Re: [Haskell-cafe] multiline strings in haskell?

2006-01-12 Thread Henning Thielemann 

On Wed, 11 Jan 2006, Michael Vanier wrote:

 Is there any support for multi-line string literals in Haskell?  I've
 done a web search and come up empty.  I'm thinking of using Haskell to
 generate web pages and having multi-line strings would be very useful.

Do you mean

unlines [first line, second line, third line]

?

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Re: [Haskell-cafe] multiline strings in haskell?

2006-01-12 Thread Jason Dagit 


On Jan 12, 2006, at 1:34 AM, Henning Thielemann wrote:



On Wed, 11 Jan 2006, Michael Vanier wrote:


Is there any support for multi-line string literals in Haskell?  I've
done a web search and come up empty.  I'm thinking of using  
Haskell to
generate web pages and having multi-line strings would be very  
useful.


Do you mean

unlines [first line, second line, third line]


The original poster probably meant something like this:

let foo = This is a
long string


Which does not end until the matching end quote.

Common Lisp has strings like this.  Quite convenient whenever you're  
communicating using lots of strings of data.  For example, when  
running as a cgi script.


Thanks,
Jason

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Re: [Haskell-cafe] multiline strings in haskell?

2006-01-12 Thread Henning Thielemann 

On Thu, 12 Jan 2006, Jason Dagit wrote:

 On Jan 12, 2006, at 1:34 AM, Henning Thielemann wrote:

  On Wed, 11 Jan 2006, Michael Vanier wrote:
 
  Is there any support for multi-line string literals in Haskell?  I've
  done a web search and come up empty.  I'm thinking of using
  Haskell to
  generate web pages and having multi-line strings would be very
  useful.
 
  Do you mean
 
  unlines [first line, second line, third line]

 The original poster probably meant something like this:

 let foo = This is a
 long string


 Which does not end until the matching end quote.

I don't see the need for it, since

unlines [
  first line,
  second line,
  third line]

works as well.

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Re: [Haskell-cafe] multiline strings in haskell?

2006-01-12 Thread Sebastian Sylvan 
On 1/12/06, Henning Thielemann [EMAIL PROTECTED] wrote:

 On Thu, 12 Jan 2006, Jason Dagit wrote:

  On Jan 12, 2006, at 1:34 AM, Henning Thielemann wrote:
 
   On Wed, 11 Jan 2006, Michael Vanier wrote:
  
   Is there any support for multi-line string literals in Haskell?  I've
   done a web search and come up empty.  I'm thinking of using
   Haskell to
   generate web pages and having multi-line strings would be very
   useful.
  
   Do you mean
  
   unlines [first line, second line, third line]
 
  The original poster probably meant something like this:
 
  let foo = This is a
  long string
 
 
  Which does not end until the matching end quote.

 I don't see the need for it, since

 unlines [
   first line,
   second line,
   third line]

 works as well.


Nevertheless Haskell supports multiline strings (although it seems
like a lot of people don't know about it). You escape it using \ and
then another \ where the string starts again.

str = multi\
\line

Preludestr
multiline


/S

--
Sebastian Sylvan
+46(0)736-818655
UIN: 44640862
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[Haskell-cafe] multiline strings in haskell?

2006-01-11 Thread Michael Vanier 
Is there any support for multi-line string literals in Haskell?  I've 
done a web search and come up empty.  I'm thinking of using Haskell to 
generate web pages and having multi-line strings would be very useful.


Mike

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Re: [Haskell-cafe] multiline strings in haskell?

2006-01-11 Thread Michael Vanier 

Yes, just like that ;-)  Thanks!

Now if somebody has a string interpolation library, I'd be a pretty 
happy camper ;-)


Mike



mvanier:
Is there any support for multi-line string literals in Haskell?  I've 
done a web search and come up empty.  I'm thinking of using Haskell to 
generate web pages and having multi-line strings would be very useful.


Do you mean like this:

string =  line one\n\
 \   line two is here\n\
 \   line three is this line\n


$ echo 'putStr string' | ghci A.hs
 line one
   line two is here
   line three is this line

-- Don

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Re: [Haskell-cafe] multiline strings in haskell?

2006-01-11 Thread Donald Bruce Stewart 
Oh, like this (by Stefan Wehr):

http://www.cse.unsw.edu.au/~dons/code/icfp05/tests/unit-tests/VariableExpansion.hs


$ ghci -fth VariableExpansion.hs
*VariableExpansion let x = 7 in $( expand ${x} )
7
*VariableExpansion let url = http://www.google.com;
*VariableExpansion $( expand Here is my url: ${url}. Do you like it? )
Here is my url: \http://www.google.com\;. Do you like it?

Cheers,
  Don

mvanier:
 Yes, just like that ;-)  Thanks!
 
 Now if somebody has a string interpolation library, I'd be a pretty 
 happy camper ;-)
 
 Mike
 
 
 mvanier:
 Is there any support for multi-line string literals in Haskell?  I've 
 done a web search and come up empty.  I'm thinking of using Haskell to 
 generate web pages and having multi-line strings would be very useful.
 
 Do you mean like this:
 
 string =  line one\n\
  \   line two is here\n\
  \   line three is this line\n
 
 
 $ echo 'putStr string' | ghci A.hs
  line one
line two is here
line three is this line
 
 -- Don
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Re: [Haskell-cafe] multiline strings in haskell?

2006-01-11 Thread Michael Vanier 

Excellent! Thanks.

Mike

Donald Bruce Stewart wrote:

Oh, like this (by Stefan Wehr):
http://www.cse.unsw.edu.au/~dons/code/icfp05/tests/unit-tests/VariableExpansion.hs


$ ghci -fth VariableExpansion.hs
*VariableExpansion let x = 7 in $( expand ${x} )
7
*VariableExpansion let url = http://www.google.com;
*VariableExpansion $( expand Here is my url: ${url}. Do you like it? )
Here is my url: \http://www.google.com\;. Do you like it?

Cheers,
  Don

mvanier:

Yes, just like that ;-)  Thanks!

Now if somebody has a string interpolation library, I'd be a pretty 
happy camper ;-)


Mike



mvanier:
Is there any support for multi-line string literals in Haskell?  I've 
done a web search and come up empty.  I'm thinking of using Haskell to 
generate web pages and having multi-line strings would be very useful.

Do you mean like this:

   string =  line one\n\
\   line two is here\n\
\   line three is this line\n


$ echo 'putStr string' | ghci A.hs
line one
  line two is here
  line three is this line

-- Don

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