require 'haskell'
# Invoke sandbox for executing ghc
Haskell.invoke_sandbox!(File.expand_path('../', __FILE__))
Haskell.compile <<-HASKELL
add :: Integer -> Integer -> Integer
add x y = x + y
result = add 1 2
HASKELL
while Haskell.compiling?
# wait for....
end
p Haskell.execute
#=> 3
# Don't forget to revoke sandbox
Haskell.revoke_sandbox!-
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Executing Haskell within Ruby by using another process
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