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Editorial Team
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Asked: 2026-06-17T16:59:14+00:00

System.out.println(neon.mems.cmu.edu/people/.split(/).length); // output is 2 I was doing some url processing. To my surprise

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System.out.println("neon.mems.cmu.edu/people/".split("/").length); // output is 2

I was doing some url processing. To my surprise I just got the result above. I thought the number of elements could be the number of splitters plus one.

I didn’t realize the last empty string(or just null) is cut off from the splitted array until now. I wonder if this is the case with every programming language.

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1 Answer

  1. Editorial Team

    No that’s not the case for every programming language and there is no universal specification so there is no reason it should be.

    Go

    a := strings.Split("neon.mems.cmu.edu/people/", "/")
fmt.Println(len(a)) // prints 3

    Javascript

    Type this in the console of your browser :

    "neon.mems.cmu.edu/people/".split('/')

    The result is

    ["neon.mems.cmu.edu", "people", ""]

    What you should do when a match is empty isn’t something obvious or inherent to the split concept. A proof of that is that old Internet Explorer versions did remove those empty matches.

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