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function producer(){ | |
return function*(){ | |
return yield io.read(); | |
}; | |
} | |
function prepend(str, fn){ | |
return function*(){ | |
return str + yield fn(); | |
}; | |
} | |
function uppercase(fn){ | |
return function*(){ | |
return (yield fn()).toUpperCase(); | |
}; | |
} | |
while (true) { | |
io.write(yield prepend('>>> ', uppercase(producer()))); | |
} |
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