pipes-demo
batch consumer, code can't complie
basic pipes with fold
add csv split
a worked version, but also slow
change [int] to maybe int
don't get result
fix func name
fail in Compiling
fix empty error
fold with batch Producer
a whole function version, with normal performance
change s ++ [str] to str:s to save time
length is slow , change to int i
30 time fast than first workable version!
no message
fix bug,change outputstyle
change to map
sort the result, add column  skip
change parameter