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I need to check if a string is present in a list, and call a function which accepts a boolean accordingly.
Is it possible to achieve this with a one liner?
The code below is the best I could get:
val strings = List("a", "b", "c") val myString = "a" strings.find(x=>x == myString) match { case Some(_) => myFunction(true) case None => myFunction(false) } I'm sure it's possible to do this with less coding, but I don't know how!
933
contains() function in Scala is used to check if a list contains the specific element sent as a parameter. list. contains() returns true if the list contains that element. Otherwise, it returns false .
Use the contains() Function to Find Substring in Scala Here, we used the contains() function to find the substring in a string. This function returns a Boolean value, either true or false.
This is the first method we use to append Scala List using the operator “:+”. The syntax we use in this method is; first to declare the list name and then use the ':+' method rather than the new element that will be appended in the list. The syntax looks like “List name:+ new elements”.
Syntax for defining a Scala List. val variable_name: List[type] = List(item1, item2, item3) or val variable_name = List(item1, item2, item3) A list in Scala is mostly like a Scala array. However, the Scala List is immutable and represents a linked list data structure. On the other hand, Scala array is flat and mutable.
Just use contains
myFunction(strings.contains(myString)) If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
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