Remove Characters from the end of a String Scala

Remove Characters from the end of a String Scala

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What is the simplest method to remove the last character from the end of a String in Scala?

I find Rubys String class has some very useful methods like chop. I would have used "oddoneoutz".headOption in Scala, but it is depreciated. I don't want to get into the overly complex:

string.slice(0, string.length - 1)

Please someone tell me there is a nice simple method like chop for something this common.

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How about using dropRight, which works in 2.8:-

"abc!".dropRight(1)

Which produces "abc"

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string.init // padding for the minimum 15 characters

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val str = "Hello world!"
str take (str.length - 1) mkString

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string.reverse.substring(1).reverse

That's basically chop, right? If you're longing for a chop method, why not write your own StringUtils library and include it in your projects until you find a suitable, more generic replacement?

Hey, look, it's in commons.

Apache Commons StringUtils.

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If you want the most efficient solution than just use:

str.substring(0, str.length - 1)

참고URL : https://stackoverflow.com/questions/1822481/remove-characters-from-the-end-of-a-string-scala