Kotlin contains ignore case

contains(element: T)’ to get the same search behavior as in a list . Returns true if element is found in the array. Returns true if element is found in the collection. Checks if the map contains the given key.

In Kotlin, == is the default way to compare two objects : it compares their values by calling equals under the hood. Thus, if equals is overridden in your class, you can safely compare its instances using ==. For reference comparison, you can use the === operator, which works exactly the same as == in Java.

Java String equalsIgnoreCase() Method The equalsIgnoreCase() method compares two strings, ignoring lower case and upper case differences. This method returns true if the strings are equal, and false if not. Tip: Use the compareToIgnoreCase() method to compare two strings lexicographically, ignoring case differences.

How to compare two strings in Kotlin

Kotlin character is represented by the type Char . For example, ‘D’, ‘F’, ‘9’ , ‘5’ etc.