Check if a string is blank or doesn't exist in Scala

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误落风尘
误落风尘 2021-02-01 16:29

I have an Option[String].

I want to check if there is a string exists and if it\'s exists its not blank.

def isBlank( input : Option[Strin         


        
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  •  南笙
    南笙 (楼主)
    2021-02-01 17:13

    you can also check using lastOption or headOption

    if the string is empty it will return None

    scala> "hello".lastOption
    res39: Option[Char] = Some(o)
    
    scala> "".lastOption
    res40: Option[Char] = None
    

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