Groovy Series: String & GString 1/2

//Single quote = normal Java String
def replacement = 'problem'
def string = 'This is a test. No $replacement'
assert string.size() == 31 //$replacement is counted normally
 
//GString
def gstring = "This is a test. No $replacement"
assert gstring.size() == 26 //now the chars in 'problem' count
assert gstring == 'This is a test. No problem'
 
//Multiple lines of normal String text
def multiLine = '''Line One
Line Two
Line Three'''
def lines = multiLine.tokenize("\n")
assert lines.size() == 3
 
//MultiLine GString
def multiGString = """Groovy can master any $replacement
${replacement + 's'} have to be solved immediately!"""
lines = multiGString.tokenize("\n")
assert lines.size() == 2
assert lines[1] == 'problems have to be solved immediately!'
 
//slashy String form
def slashyString = /${lines[0]} in no time. Look, no escaping of \ backslashes/
assert slashyString == 'Groovy can master any problem in no time. Look, no escaping of \\ backslashes'