Idris2/libs/contrib/Data/String/Interpolation.idr
2021-06-28 13:48:37 +01:00

34 lines
1.0 KiB
Idris

||| A DYI version of 'string interpolation', mimicking Python 3's 'f-string' syntax
||| Not as fancy
module Data.String.Interpolation
import Data.String
namespace Data.String.Interpolation.Basic
%inline
public export
F : List String -> String
F strs = concat (strs)
namespace Data.String.Interpolation.Nested
%inline
public export
F : List (List String) -> String
F strss = F (concat strss)
{- Examples:
fstring : String
fstring = let apples = "apples" in
F["I have some ", apples," here."] --- cf. f"I have some {apples} here."
multiline : String
multiline = let name = "Edwin"
profession = "Hacker"
affiliation = "the University of St. Andrews" in --- cf.
F [["Hi ",name,". " ] --- f"Hi {name}. " \
,["You are a ",profession,". "] --- f"You are a {profession}. " \
,["You were in ",affiliation,"."] --- f"You were in {affiliation}."
]
-}