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资源说明：Library for string interpolation and generation
Multiline strings and interpolation ----------------------------------- Quasiquote 'str' implements multiline strings with interpolation. Interpolating a value into the string is done by $$ and interpolating anything with instance Show is $: $. Due to pretty deep limitations, the parser is not able to properly deduce associtivity of infix operators, so use lots and lots of parenthesis. Repetitive patterns can be made with # symbol: # in :
(| )# Where (| ) denotes optional separator for the elements. Multiline indentation is handled by aligning on smallest un-empty line after the first. Neither pattern matching nor nested #-patterns are supported, however, see example below. Normal '\n' style escaping of special characters is intentionally not supported. Please use $endline$ or $"\n"$ style instead. As an example, let's plot set of vectors with gnuplot: plotVecs :: [(String,[Double])] -> String plotVecs vs = [$str| ## Plot multiple vectors plot #(n,_) in vs:'-' with lines lw 5 title $:n$ |, # #d in map snd vs:$singleVec d$$endline$e$endline$# |] where singleVec n = [$str|#(e,i) in zip n [1..]: $:i$ $:e$|$endline$#|] *Gnuplotter> plotVecs [("A",[1..5]),("B",[2..6])] # Plot multiple vectors plot '-' with lines lw 5 title "A" , '-' with lines lw 5 title "B" 1 1.0 2 2.0 3 3.0 4 4.0 5 5.0 e 1 2.0 2 3.0 3 4.0 4 5.0 5 6.0 e Change log ---------- * 0.2.5.1 - Compiles with GHC 7.0.1 * 0.2.5.2 - Compiles with GHC 6.12
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