String splitting in Scala without discarding trailing empty strings

Question

Scala's splitting strings by character function discards trailing empty strings. For example "1,2,3,,,".split(',') results in Array("1", "2", "3").

Is there a built-in method to split strings by character in Scala which keeps those, so that the result would be Array("1", "2", "3", "", "", "").

The fourth bird · Accepted Answer · 2021-12-17 18:03:47Z

2

If you pass a string as the first parameter "," then you can specify -1 as the second parameter to return the empty matches as well.

"1,2,3,,,".split(",", -1)

Output

res0: Array[String] = Array(1, 2, 3, "", "", "")

answered Dec 17, 2021 at 18:03

The fourth bird

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Amaterasu Over a year ago

ok, actually after testing: if escaped properly this function is not slower than splitting by character

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