Is there a clever way to transform an array into a dictionary of sub-arrays using specified indices in Ramda?
const originalArray = ["A", "B", "C", "D", "E"];
const indicesToSplit = [0, 0, 1, 0, 3];
// Desired output:
R.split(indicesToSplit, originalArray) // { "0": ["A", "B", "D"], "1": ["C"], "3": ["E"] }
Looking for an elegant solution using Ramda library. Any ideas?
Utilize the R.zip function to merge the arrays into an array of value/index pairs. Then, group them by indices and extract only the values:
const { pipe, zip, groupBy, last, map, head } = R
const customFunction = pipe(
zip, // combine the arrays into an array of value/index pairs
groupBy(last), // group by the indices
map(map(head)) // retrieve only the values from the pairs
)
const items = ["A", "B", "C", "D", "E"]
const indexes = [0, 0, 1, 0, 3]
const output = customFunction(items, indexes)
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