Calling Multiple Methods in Kotlin
Kotlin lets you call multiple methods on the same object.
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class StringParser(var string: String) {
fun removeHTMLTags(): String {
string = Regex("<[^>]*>").replace(string, "")
return string
}
fun removeSpecialCharacters(): String {
string = Regex("[^A-Za-z0-9 ]").replace(string, "")
return string
}
fun removeLeadingAndTrailingSpaces(): String {
return string.trim()
}
}
fun main(args: Array<String>) {
val htmlString = """
<html>
<header><title>This is a title</title></header>
<body>
Hello world!!!
</body>
</html>
""".trimIndent()
val stringParser = StringParser(htmlString)
val response = with(stringParser) {
removeHTMLTags()
removeSpecialCharacters()
removeLeadingAndTrailingSpaces()
}
println(response)
// This is a title Hello world
}
Using with you can chain all the method calls in the object instance and have it return the result of the last expression.