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That’s why the following assert would actually not compile as it would look like a non-terminated statement: .The escaping character is the dollar sign, and it can escape another dollar, or a forward slash.

def name = "Guillaume" def date = "April, 1st" def dollar Slashy = $/ Hello $name, today we're ${date}.The Groovy Development Kit contains methods for stripping out the indentation with the Any Groovy expression can be interpolated in all string literals, apart from single and triple single quoted strings.Interpolation is the act of replacing a placeholder in the string with its value upon evaluation of the string. So if several statements are inserted in that placeholder, the last one should somehow return a meaningful value to be inserted.For instance, "The sum of 1 and 2 is equal to ${def a = 1; def b = 2; a + b}" is supported and works as expected but a good practice is usually to stick to simple expressions inside GString placeholders., etc, are valid, but expressions that would contain parentheses like method calls, curly braces for closures, or arithmetic operators would be invalid.Given the following variable definition of a number: String take String(String message) { (4) assert message instanceof String (5) return message } def message = "The message is ${'hello'}" (1) assert message instanceof GString (2) def result = take String(message) (3) assert result instanceof String assert result == 'The message is hello' Although interpolated strings can be used in lieu of plain Java strings, they differ with strings in a particular way: their hash Codes are different.

Plain Java strings are immutable, whereas the resulting String representation of a GString can vary, depending on its interpolated values.Even for the same resulting string, GStrings and Strings don’t have the same hash Code.An empty slashy string cannot be represented with a double forward slash, as it’s understood by the Groovy parser as a line comment.This chapter covers the syntax of the Groovy programming language.The grammar of the language derives from the Java grammar, but enhances it with specific constructs for Groovy, and allows certain simplifications./** * A Class description */ class Person { /** the name of the person */ String name /** * Creates a greeting method for a certain person.