How can I write multiline strings in Haskell?

Question

Let\'s say I have this string literal with line breaks:

file :: String
file = \"the first line\\nthe second line\\nthe third line\"

Is there an

Answer 1

Many times this facality is referred to as heredocs. Haskell does not have heredocs.

However, there are several packages that use GHC's QuasiQuotes extensions to achieve this.

Here is one I use: http://hackage.haskell.org/package/interpolatedstring-perl6-0.9.0/docs/Text-InterpolatedString-Perl6.html

Your example would look like:

file = [q|
the first line
the second line
the third line
|]