Mastering JavaScript Functional Programming - Second Edition

Counting files

We can also go back to our pipeline. We had written a single-line function to count the odt files in a given path:

const countOdtFiles2 = path => count(filterOdt(getDir(path)));

Disregarding (at least for the moment) the observation that this code is not as clear as the pipeline version that we got to develop later, we could have also written this function with composition:

const countOdtFiles2b = path => compose(count, filterOdt, getDir)(path);countOdtFiles2b("/home/fkereki/Documents"); // 4, no change here

We could have also written the function in pointfree fashion, without specifying the path parameter, with const countOdtFiles2 = compose(count, filterOdt, getDir), but I wanted to parallel the previous definition.

It would ...